fix(snd): replace Audio Sync solution with a faster one

src/bus.rs

@@ -70,8 +70,12 @@ impl Bus {
         self.snd.set_audio_src(sender)
     }
 
-    pub(crate) fn is_mpsc_still_full(&mut self) -> bool {
-        self.snd.is_mpsc_still_full()
+    pub(crate) fn is_full(&self) -> bool {
+        self.snd.is_full()
+    }
+
+    pub(crate) fn flush_samples(&mut self) {
+        self.snd.flush_samples()
     }
 
     pub(crate) fn clock(&mut self) {