Hello rcbloom2.
Welcome to the Gnutella forums!
Your media player is lacking the necessary CODECs to play the file. It's a common problem. Easiest fix is to download and install VLC player. It's free and comes with all necessary CODECs installed.
More good info here:
http://www.gnutellaforums.com/downlo...ad-issues.html Scroll down to the posts from Lord of the Rings.