amusing, but not good on my phone

hi guys,
i have an LG ks360 phone and have been suffering when using the music player function, would you be able to help? the basic problem is that when i play some music files it reaches the end of the song and, instead of moving to the next in the playlist, it decides that restarting the phone is a good idea :confused
i can't tell if its my poor taste in music (i'm not scared to admit it) or just the phone having a bit of a spaz