diff --git a/Cargo.lock b/Cargo.lock
index 68dfc98..344a89f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -19,12 +19,6 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
-[[package]]
-name = "arc-swap"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b585a98a234c46fc563103e9278c9391fde1f4e6850334da895d27edb9580f62"
-
 [[package]]
 name = "arrayref"
 version = "0.3.6"
@@ -37,6 +31,41 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
 
+[[package]]
+name = "async-std"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "538ecb01eb64eecd772087e5b6f7540cbc917f047727339a472dafed2185b267"
+dependencies = [
+ "async-task",
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-utils",
+ "futures-core",
+ "futures-io",
+ "futures-timer",
+ "kv-log-macro",
+ "log",
+ "memchr",
+ "mio",
+ "mio-uds",
+ "num_cpus",
+ "once_cell",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
+]
+
+[[package]]
+name = "async-task"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ac2c016b079e771204030951c366db398864f5026f84a44dafb0ff20f02085d"
+dependencies = [
+ "libc",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -97,24 +126,12 @@ dependencies = [
  "constant_time_eq",
 ]
 
-[[package]]
-name = "block"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d8c1fef690941d3e7788d328517591fecc684c084084702d6ff1641e993699a"
-
 [[package]]
 name = "byteorder"
 version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
-[[package]]
-name = "bytes"
-version = "0.5.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
-
 [[package]]
 name = "cc"
 version = "1.0.54"
@@ -136,17 +153,6 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
-[[package]]
-name = "chrono"
-version = "0.4.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
-dependencies = [
- "num-integer",
- "num-traits",
- "time",
-]
-
 [[package]]
 name = "clang-sys"
 version = "0.29.3"
@@ -227,6 +233,42 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cced8691919c02aac3cb0a1bc2e9b73d89e832bf9a06fc579d4e71b68a2da061"
+dependencies = [
+ "crossbeam-utils",
+ "maybe-uninit",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f02af974daeee82218205558e51ec8768b48cf524bd01d550abe5573a608285"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+ "maybe-uninit",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "crossbeam-utils",
+ "lazy_static",
+ "maybe-uninit",
+ "memoffset",
+ "scopeguard",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.7.2"
@@ -239,21 +281,22 @@ dependencies = [
 ]
 
 [[package]]
-name = "dbus"
-version = "0.6.5"
+name = "directories"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48b5f0f36f1eebe901b0e6bee369a77ed3396334bf3f09abd46454a576f71819"
+checksum = "551a778172a450d7fc12e629ca3b0428d00f6afa9a43da1b630d54604e97371c"
 dependencies = [
- "libc",
- "libdbus-sys",
+ "cfg-if",
+ "dirs-sys",
 ]
 
 [[package]]
-name = "dirs"
-version = "1.0.5"
+name = "dirs-sys"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
+checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
 dependencies = [
+ "cfg-if",
  "libc",
  "redox_users",
  "winapi 0.3.8",
@@ -263,19 +306,12 @@ dependencies = [
 name = "domasi"
 version = "0.1.0"
 dependencies = [
+ "async-std",
  "clap",
- "lazy_static",
- "notify-rust",
+ "directories",
  "rodio",
- "tokio",
 ]
 
-[[package]]
-name = "fnv"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
-
 [[package]]
 name = "fuchsia-zircon"
 version = "0.3.3"
@@ -298,6 +334,18 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59f5fff90fd5d971f936ad674802482ba441b6f09ba5e15fd8b39145582ca399"
 
+[[package]]
+name = "futures-io"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de27142b013a8e869c14957e6d2edeef89e97c289e69d042ee3a49acd8b51789"
+
+[[package]]
+name = "futures-timer"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1de7508b218029b0f01662ed8f61b1c964b3ae99d6f25462d0f55a595109df6"
+
 [[package]]
 name = "getrandom"
 version = "0.1.14"
@@ -349,6 +397,15 @@ dependencies = [
  "winapi-build",
 ]
 
+[[package]]
+name = "kv-log-macro"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a2d3beed37e5483887d81eb39de6de03a8346531410e1306ca48a9a89bd3a51"
+dependencies = [
+ "log",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -378,15 +435,6 @@ version = "0.2.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
 
-[[package]]
-name = "libdbus-sys"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc12a3bc971424edbbf7edaf6e5740483444db63aa8e23d3751ff12a30f306f0"
-dependencies = [
- "pkg-config",
-]
-
 [[package]]
 name = "libloading"
 version = "0.5.2"
@@ -406,18 +454,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "mac-notification-sys"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dfb6b71a9a89cd38b395d994214297447e8e63b1ba5708a9a2b0b1048ceda76"
-dependencies = [
- "cc",
- "chrono",
- "dirs",
- "objc-foundation",
-]
-
 [[package]]
 name = "mach"
 version = "0.3.2"
@@ -428,13 +464,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "malloc_buf"
-version = "0.0.6"
+name = "maybe-uninit"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62bb907fe88d54d8d9ce32a3cceab4218ed2f6b7d35617cafe9adf84e43919cb"
-dependencies = [
- "libc",
-]
+checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
 
 [[package]]
 name = "memchr"
@@ -442,6 +475,15 @@ version = "2.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 
+[[package]]
+name = "memoffset"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4fc2c02a7e374099d4ee95a193111f72d2110197fe200272371758f6c3643d8"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "minimp3"
 version = "0.3.5"
@@ -474,24 +516,12 @@ dependencies = [
  "kernel32-sys",
  "libc",
  "log",
- "miow 0.2.1",
+ "miow",
  "net2",
  "slab",
  "winapi 0.2.8",
 ]
 
-[[package]]
-name = "mio-named-pipes"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5e374eff525ce1c5b7687c4cef63943e7686524a387933ad27ca7ec43779cb3"
-dependencies = [
- "log",
- "mio",
- "miow 0.3.4",
- "winapi 0.3.8",
-]
-
 [[package]]
 name = "mio-uds"
 version = "0.6.8"
@@ -515,16 +545,6 @@ dependencies = [
  "ws2_32-sys",
 ]
 
-[[package]]
-name = "miow"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22dfdd1d51b2639a5abd17ed07005c3af05fb7a2a3b1a1d0d7af1000a520c1c7"
-dependencies = [
- "socket2",
- "winapi 0.3.8",
-]
-
 [[package]]
 name = "net2"
 version = "0.2.34"
@@ -546,26 +566,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "notify-rust"
-version = "3.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8da29142be3f71b2165a6b3991c26045b674edbf04cdfc42f323094fc3e4b5a"
-dependencies = [
- "dbus",
- "mac-notification-sys",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.42"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
 [[package]]
 name = "num-traits"
 version = "0.2.11"
@@ -585,35 +585,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "objc"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "915b1b472bc21c53464d6c8461c9d3af805ba1ef837e1cac254428f4a77177b1"
-dependencies = [
- "malloc_buf",
-]
-
-[[package]]
-name = "objc-foundation"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1add1b659e36c9607c7aab864a76c7a4c2760cd0cd2e120f3fb8b952c7e22bf9"
-dependencies = [
- "block",
- "objc",
- "objc_id",
-]
-
-[[package]]
-name = "objc_id"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c92d4ddb4bd7b50d730c215ff871754d0da6b2178849f8a2a2ab69712d0c073b"
-dependencies = [
- "objc",
-]
-
 [[package]]
 name = "ogg"
 version = "0.7.0"
@@ -623,6 +594,12 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
+
 [[package]]
 name = "peeking_take_while"
 version = "0.1.2"
@@ -635,6 +612,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7505eeebd78492e0f6108f7171c4948dbb120ee8119d9d77d0afa5469bef67f"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.17"
@@ -723,22 +706,18 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
 [[package]]
 name = "shlex"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
 
-[[package]]
-name = "signal-hook-registry"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
-dependencies = [
- "arc-swap",
- "libc",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.2"
@@ -756,18 +735,6 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
-[[package]]
-name = "socket2"
-version = "0.3.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "winapi 0.3.8",
-]
-
 [[package]]
 name = "stdweb"
 version = "0.1.3"
@@ -820,57 +787,12 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
-dependencies = [
- "libc",
- "winapi 0.3.8",
-]
-
 [[package]]
 name = "tinyvec"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53953d2d3a5ad81d9f844a32f14ebb121f50b650cd59d0ee2a07cf13c617efed"
 
-[[package]]
-name = "tokio"
-version = "0.2.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d099fa27b9702bed751524694adbe393e18b36b204da91eb1cbbbbb4a5ee2d58"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "iovec",
- "lazy_static",
- "libc",
- "memchr",
- "mio",
- "mio-named-pipes",
- "mio-uds",
- "num_cpus",
- "pin-project-lite",
- "signal-hook-registry",
- "slab",
- "tokio-macros",
- "winapi 0.3.8",
-]
-
-[[package]]
-name = "tokio-macros"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0c3acc6aa564495a0f2e1d59fab677cd7f81a19994cfc7f3ad0e64301560389"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "unicode-width"
 version = "0.1.7"
diff --git a/Cargo.toml b/Cargo.toml
index be7da10..9ef32a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,8 +7,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tokio = { version = "0.2.21", features = ["full"] }
 rodio = "0.11.0"
 clap = "2.33.1"
-notify-rust = "3.6.3"
-lazy_static = "1.4.0"
+directories = "2.0.2"
+async-std = "1.5.0"
diff --git a/src/lib.rs b/src/lib.rs
index 77d1576..c612b04 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,38 @@
 pub use pomodoro::Pomodoro;
 
 pub mod pomodoro {
+    use directories::ProjectDirs;
+    use rodio::{Decoder, Device, Source};
+    use std::fs::{self, File};
+    use std::io::BufReader;
+    use std::path::{Path, PathBuf};
+
+    #[derive(Copy, Clone)]
+    pub struct Alert<'a> {
+        path: &'a Path,
+        device: &'a Device,
+    }
+
+    impl Alert<'_> {
+        pub fn new<'a, P: AsRef<Path>>(path: &'a P, device: &'a Device) -> Alert<'a> {
+            Alert {
+                path: path.as_ref(),
+                device,
+            }
+        }
+
+        pub fn load<'a, 'b, P: AsRef<Path>>(&'a mut self, _path: &'b P) {
+            unimplemented!()
+        }
+
+        pub fn play(&self) {
+            let file = File::open(self.path).unwrap();
+            let source = Decoder::new(BufReader::new(file)).unwrap();
+
+            rodio::play_raw(self.device, source.convert_samples());
+        }
+    }
+
     #[derive(PartialEq, Eq)]
     pub enum State {
         Work,
@@ -13,33 +45,43 @@ pub mod pomodoro {
         pub work_time: u64,
         pub short_break: u64,
         pub long_break: u64,
+        pub data_directory: PathBuf,
     }
 
     impl Default for Config {
         fn default() -> Self {
+            let dirs = ProjectDirs::from("moe", "paoda", "domasi").unwrap();
+
+            let data_directory = dirs.data_dir().to_owned();
+
+            if !data_directory.exists() {
+                fs::create_dir_all(&data_directory).unwrap();
+            }
+
             Config {
                 work_time: 1,
                 short_break: 1,
                 long_break: 1,
+                data_directory,
             }
         }
     }
 
-    pub struct Pomodoro {
-        pub count: u64,
-        pub state: State,
+    pub struct Pomodoro<'a> {
+        count: u64,
+        state: State,
+        alert: Alert<'a>,
     }
 
-    impl Default for Pomodoro {
-        fn default() -> Self {
+    impl Pomodoro<'_> {
+        pub fn new<'a>(alert: &'a Alert) -> Pomodoro<'a> {
             Pomodoro {
                 count: 0,
                 state: State::Inactive,
+                alert: *alert,
             }
         }
-    }
 
-    impl Pomodoro {
         fn next(&mut self) {
             match self.state {
                 State::Work => {
@@ -59,16 +101,17 @@ pub mod pomodoro {
 
         async fn wait(minutes: u64) {
             use std::time::Duration;
-            use tokio::time::delay_for;
 
             let duration = Duration::from_secs(minutes * 5);
-            delay_for(duration).await;
+            async_std::task::sleep(duration).await;
         }
 
         pub async fn start(&mut self, config: Config) {
             loop {
                 self.next();
 
+                self.alert.play();
+
                 match self.state {
                     State::Work => {
                         println!("Start Work.");
diff --git a/src/main.rs b/src/main.rs
index e7041cc..8d85529 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,8 @@
+use async_std::task;
 use clap::{App, ArgMatches, SubCommand};
-use domasi::pomodoro::Config;
+use domasi::pomodoro::{Alert, Config};
 use domasi::Pomodoro;
+
 fn main() {
     let matches = App::new("Domasi")
         .version("0.1.0")
@@ -10,15 +12,20 @@ fn main() {
         .get_matches();
 
     match matches.subcommand() {
-        ("start", Some(args)) => start(args),
+        ("start", Some(sub_matches)) => start(sub_matches),
         _ => {}
     }
 }
 
-#[tokio::main]
-pub async fn start(_args: &ArgMatches) {
-    let mut pomodoro = Pomodoro::default();
+pub fn start(_args: &ArgMatches) {
     let config = Config::default();
 
-    pomodoro.start(config).await;
+    let audio_path = config.data_directory.join("sound/alert.ogg");
+    let default_device = rodio::default_output_device().unwrap();
+    let alert = Alert::new(&audio_path, &default_device);
+    let mut pomodoro = Pomodoro::new(&alert);
+
+    task::block_on(async {
+        pomodoro.start(config).await;
+    });
 }