Hey guys, just found a very cool how-to by someone on CrackBerry.com forums, and thought I'd share here...
1) First off, you've gotta have a Sirius subscription (duh!). You also need broadband at your home 'puter.
2) D/L and install ORB on your computer:
www.orb.com
2a) Create an ORB account
3) D/L and install uSirius on your computer:
www.millardsoftware.com/usirius
4) Start both.
5) go to Internet Radio inside Orb. Create a CUSTOM CHANNEL.
6) to get the url you need for your "path" setting in Orb, select that channel in uSirius and copy it.
7) Leave both running on your computer.
8) go to your Curve browser: mycast.orb.com - sign in and go to your Audio/Internet Radio listings..
I listened to Stern for a while before. It's not a standalone app (like XM has), but it gets the job done for a little extra work. Enjoy.