My buddy Nathan comes through with this today--www.minixm.com.
This is XM Radio's official lightweight stream site, meant for devices like the Treo
700w. Access the site through your Pocket IE, and choose your channel.
When the stream begins, Windows Media Player will start and handle the playback.
You can get the "now playing" in either WMP or PIE. The sound quality isn'tfantastic,
but good enough, especially for the news programs.
Bad news for Treo 650 users--the XM stream requires support for Windows Media Player
9 or better, which apparently isn't available for the Palm OS. Trying to open
the stream crashed Bob's 650.