I've had 2 different blackberries (same model) and on both, when in the media player, the volume up/down changes the song. Also when i'm downloading (apps) the song also skips to the next one. Is this a common issue or what??
I encountered the same problem and the solutions above are correct. Just a quick press up/down changes volume. Holding the up/down will skip songs. I noticed this after the my latest OS upgrade (4.5.xxx from ATT) but maybe it acted that way all along