Stage expansion messed up songs and sounds

[obliterator]

I noticed that a song in battlefield stage never plays, and when i go to my music and try and change it the game freezes. This keeps happening even if i turn off all hacks and cheat codes. First time i noticed this i thought the savefile was corrupted so i deleted it and made a new one, and that fixed it but after a couple matches it happened again. Also the final smashes of luigi, peach and donkey kong don't play their music anymore.

Since the stage expansion packs use codes to give songs to custom stages i think that may be the cause but i'm not sure.

I really don't mind as it doesn't affect the game that much, but i was wondering if there's a way to fix this or if it's something common?