[zombywoof]

I don't see much to gain on zipping mp3's or downloading zipped mp3's since the filesize is not going to be much different since mp3's are already compressed. The only thing useful I can see with using zip files is to pack a bunch of singles together into a zip file, but then that would not be a real rip of a full cd anyways. You'd be better off downloading individual mp3 files to make up the album or just look for the full cd in mp3 format. You have to wonder if some of these zip files are tested before they are shared. Others here have pointed out though what could have gone wrong with the zip file such as being an invalid zip file, or corrupted when unzipping it, filelengths etc..