galaxy s2 stock music player

hi guys,

i am having trouble with the stock music player.

For no apparent reason that i am aware of, it wont recognise any new music that i transfer across whether its to the SD card (although wheb i put the card into my brothers Galaxy S2, his phone picks it up using the stock player) or the internal memory.

i have heard of a file called .nomedia causing this problem, but cant find any evidence or traces of this file. can someone help, its doing my nut.