nokia 5300 XpresS music standard audio...

[dontneedname]

Hi, i have a nokia 5300 Xpress music and i really like it( never had other brand than nokia). But when i play music from the audioplayer(obviously) some weird sound like: solar eclipse.aac, tinker.aac, today.aac, always here.aac, grafitti.aac, etc just plays. so i tried to delete it directly on my phone, didnt work. i tried to delete it on my pc while connected with usb=> "this file cannot be deleted". if some1 could help me to delete them i would really really be thankful. grtz and thx in advance.

[dontneedname]

i also tried to make seperate playlists but also that didnt work