Ah! I can understand your disgust with mp3.com's use of the UBB, Hugo. It appears they have applied their own directory structure to link to seperate threads within the bulletin board. It's awful, and I fully agree. The shining example, in my opinion, is the board at klipsch.com. Here's a link to just the bulletin board (their site isn't that great):
http://www.klipsch.com/cgi-bin/ubb/Ultimate.cgi?action=intro&BypassCookie=true
(this probably won't work, so you can just go to www.klipsch.com)

Then go to the first ProMedia forum. That's where all my posts are (over 500 of them).

IMO the UBB simply makes some things easier to navigate. I especially like the directory type thing at the top which lets you easily select which level you want to be at.

However, this BB has some very good features as well. I merely offer this as a suggestion, because it is not a bad bit of software.