I don’t know why I registered to be informed since I never got the email, but Today Sirus XM has released their app for the Android Platform. When I got my Nexus one there were two things that I missed, my Slingplayer App, and my Satellite Radio App. Well one down and one to go. If you want to install it all you have to do is go to siriusxm.com/android on your device. When you get there you will have the option to download and install the app.
Once you downloaded it you will see siriusxm.apk in your download history. Just click it to install. Remember that you must set your Android device to install “non Marketplace applications” This can be done under Settings| Applications then hit the box for Unknown Sources.
Of course you will have to have a Satellite Radio Account but they do have 7 day free trials.