sipie. For all your command-line Sirius streaming needs:

Enter stream: octane
07 09|07 14:41 octane: Sevendust-Ugly
07 09|07 14:42 octane: Puddle Of Mudd-Famous
07 09|07 14:45 octane: Octane-Rock Fuel 4 The Masses
07 09|07 14:51 octane: Kayla-kayla@sirius-radio.com
07 09|07 14:51 octane: Saliva-King Of The Stereo
07 09|07 14:55 octane: Nickelback-Rock Star
07 09|07 14:59 octane: Seether-Truth

If you have python installed and want a GUI or (more importantly) a great command-line player, go install sipie. Installation is a snap and it uses several different audio players (etc mplayer) to handle the streaming.