Hello manxmanaces,
Welcome to the Gnutella forums!
I guess you are referring to videos. The problem is most likely an issue with video CODECs. Easiest fix - download and install VLC Player. It's free, and comes with all necessary CODECs.
Very useful info here:
http://www.gnutellaforums.com/downlo...ad-issues.html Scroll down the page to the posts from Lord of the Rings.