TFT Editor - Buggy Sound Files

I import files, I can't delete them. I love to listen to the music with the WE, but now I can't even delete them. My soccer map is 10mb and standing. I used WinMPQ to try to take them out, but the sound files is STILL there.

Anyone know how to delete them?

Close the map, then use WinMPQ. Otherwise try restarting.

EDIT: Oh my god... I missed the Import Manager! STUPID TFT EDITOR! :D