Ubuntu Movie Player Jaunty

[Evans Jahja]

Hi, I don't know if there's already the update for this, but when I play 
a song, which is mp3 files, it plays normally but when I close the 
player and play another song it says:
An error occurred
Internal GStreamer error: state change failed.
An error occured
The audio output is in use by other application...
I can play the other song again after about 10 seconds.