Fix player freezing and rapid cycling issues

- Switch from VLC to PIL for image display to avoid VLC display errors
- Add transition protection to prevent rapid media cycling
- Remove conflicting next_media_loop calls
- Improve error handling and logging for better debugging
- Fix VLC configuration for better Raspberry Pi compatibility

signage_player/main.py

@@ -54,9 +54,12 @@ def main():
     def reload_playlist_if_updated():
         new_playlist = load_latest_playlist()
         if new_playlist != player.playlist:
+            print("[MAIN] Playlist updated, reloading...")
             player.playlist = new_playlist
             player.current_index = 0
-            player.show_current_media()
+            # Only restart if we're not already in a transition
+            if not hasattr(player, 'is_transitioning') or not player.is_transitioning:
+                player.show_current_media()
         root.after(10000, reload_playlist_if_updated)
     reload_playlist_if_updated()