massive problem with my game! need help!

[arcray20]

i cant change the music for most of the stages cuz it freezes when i select the stage!
thats the only problem i have right now, but should i buy a new disc?

i thot it was the sd card with all the cheats, but even if i remove it this still happens!
any ideas as to why this is happend and how to fix it are appreciated  :'(

[wii]

you need the music reset code. they are somewhere on the internet. tha should fix it.