I've only had limewire a little while and have made a few silly mistakes getting started. One thing I've learned is to simply check the size of the file to see if it's consistent with what it is supposed to be.

Recently, downloaded I carelessly downloaded an mp3 which turned out to be only about 300k instead of about 3000k. Turned out to be some bloody audio advert for something. (I don't know what. It didn't get played long enough.)