Those are fakes. Have a look at the thread below:wink:
http://www.gnutellaforums.com/download-upload-problems/60405-whats-deal-these-20min-songs-no-music.html

Keep searching, vary your search terms - look for artist or album rather than song title & try the All Types search too. Stay away from files with heaps of sources, try going for a file with 10 sources or less or even a file with a single modem source.