RIM makes a great phone as long as you aren't trying to do too many fun things with it. I think I was reading about a long obnoxious workaround to get it done. I'll look into it again and post it here when I find it.
The good news is that there is a long, obnoxious work around. You can find that in the "old" forum. It does work...I've tried it.
The bad news is that the Blackberry (I have an 8830 with Verizon) is not really suited for streaming audio. It really takes a toll on your battery. You'll need to have a charger or spare battery with you if you plan to do any serious streaming.
Do you have a link to that thread? It could take me weeks trying to find it. I want it for when I am at a customer site and can't stream online. Then I would use my BB and have it charging as I am streaming.