Ms audio playback prob

[SiNiStEr]

Just recently my audio player has be acting up..... I load a mp3 which works fine.... when i go to playback the file it says "this track is not avaliable because of the following reasons etc" but when i press ok an play it works........If any one has had this prob let me know or how to fix it thanks.........

[JOSE8610]

well i started getting that **** too it said it couildnt play b/c some copyright ****, but then it played, wat i did was connect to pc with import and delete everything in the memory stick absolutely everything, and then insert it to the clie, the clie then formats it to work wit it, and then i just put my music in the memory stick again, by the way im 16 wit an NR70V/U pretty cool huh