Made the player always cache also the next track when Player.play() gets executed so that there is completely no delay when the track finished and a new track starts.

wobuzz/player/player.py

@@ -1,5 +1,6 @@
 #!/usr/bin/python3
 
+import threading
 import pygame.mixer
 import pygame.event
 from .playlist import Playlist
@@ -32,6 +33,10 @@ class Player:
 
         self.app.gui.track_control.on_playstate_update()
 
+        # cache next track so it immediately starts when the current track finishes
+        caching_thread = threading.Thread(target=self.cache_next_track)
+        caching_thread.start()
+
     def track_finished(self):
         if not self.current_playlist.on_last_track():
             previous_track = self.current_playlist.current_track
@@ -122,3 +127,14 @@ class Player:
         self.play()
         self.track_progress.start()
 
+    def cache_next_track(self):
+        # cache the next track
+        # (usually run in separate thread)
+        if self.current_playlist.on_last_track():
+            return
+
+        track = self.current_playlist.tracks[self.current_playlist.current_track_index + 1]
+
+        if not track.cached:
+            track.cache()
+