I have music loaded on a SD card in my Droid Incredible. Sometimes the music turns on by itself, even when the phone is "sleeping" or being charged. I do not know what is triggering the music to play. Has anyone had this issue?
What kind of music apps you running? Stock? Market? Name of app?
and does it play continuously, or does it just come on for a few seconds and stop? the reason i ask is because for a while, mine would randomly play 5-10 seconds of nirvana VERY loud. i finally realized that my facebook notification was set to play music....lol. luckily i realized this BEFORE my wife threw my device out the window at 3 am!!