Well they give you the bpm so theoretically you could keep say, just one element like Chino's vox and completely change/redo the rest of it (which, soon enough on Youtube there'll be plenty). Yeah I agree with you though, could be a more ideal situation with unprocessed wav files.
Thanks for the heads up, because I have been jamming this alot lately and wanted to mess with doing some different versions of some of these songs.