I haven't had that problem myself, but it seems the file got corrupted while being downloaded. Did IE crash when downloading, and did you get the file from the Rescued Items folder?
Try changing the creator to Mp3 and type to TVOD and try playing from QT Player. If you want mp3's its probably best to use Macster or something similar. I haven't got the URL on me but will post it here when found.
Also, I suggest you switch to Netscape Communicator - it really is much better than explorer. I assume you are using Explorer because of the "ietemp" thing.
Hope that helps somewhat...