Problem with uploaded music

[Jakonen]

i uploaded some songs via reasorce manager, and it works just fine......
IF you keep it above 80 Pitch.  Most times when i move the pitch below or at the 80 point, the music sounds Scrambled and unusually sped up. sometimes it doesnt do this, and when it doesnt the music sounds kinda cool and i want to use it but after i close out of the program the scrambledness continues after reopening the program.
These are mp3's and it doesnt happen to any of the tracks that came with the program.
Please help!

[Jakonen]

I didnt realy solve my problem but i found a way around it. i downloaded audacity and im changing the music through that.