I am using an app called "Sleep Song" that plays either a built-in song or an mp3 playlist or song of your choice. You set it for a period of time and it gradually diminishes the music. All worked well until I upgraded to GB, and now whenever I put my Droid X on the dock, the music stops. The same thing occurs if I turn off the screen. I am wondering if other users of the app have noticed the same thing or if anyone has a suggestion to get it back working again. I can't find any settings that might be a factor.