I use chrome and run on windows vista. I was working on my project boombox ( http://scratch.mit.edu/projects/11021617/ ) and I was using someone elses music (I used my backpack) but it wouldn't let me put it in my project, it only does this with some of my music.

Please help

How big is the song file? Some files take longer to import into a project than others.

When my sounds go in scratch, all it says is that scratch can not upload the file! Help!