add comment

Author: felix920506

discord/player.py

@@ -839,4 +839,5 @@ def _speak(self, speaking: bool) -> None:
             _log.info("Speaking call in player failed: %s", e)
 
     def played_frames(self) -> int:
+        """Gets the number of 20ms frames played since the start of the audio file."""
         return self._played_frames