1. When the music player is open and a song is playing the phone should be allowed to lock the keypad.
2. When the keypad is locked and music is playing the volume buttons on the side of the phone should still be working otherwise you always need to unlock the phone everytime you want to adjust the volume.
3. When you unplug the headphones from the phone while music is playing you should be asked if you want music playback to continue through the phones speaker instead of automatically continue playing through the speaker.
Hope Nokia reads users input