When I try to download this (same method as a audio), it gives me an error message before the download that says: "bad data from tracker". what does this mean and how do I get around it?

You may want to try it from a known good link. Sounds like the torrent file itself you have may be pointing to a bad link.

try this one

http://www.easytree.org/torrents-details.php?id=9604

YOu may have to completely restart downloading your torrent. I believe that it may have been chaged at the source.

I hope this helps

Youkan