SIRIUS XM satellite radio subscribers can now access the service on yet another mobile platform with today’s launch of theSIRIUS XM Android client.

Already available for the iPhone and BlackBerry devices, the expansion to Android smartphones extends the reach of the country’s only satellite radio service to a wide new range of supported handsets.

Subscribers have access to more than 120 channels of commercial-free audio programming from entertainment to sports to comedy and more, accessible over both cellular and Wi-Fi networks via the app. You can also mark channels as “Favorites” for faster retrieval, and of course the built-in multi-tasking on the Android platform allows users to listen to tunes while doing other activities like web browsing.

There’s no extra charge for accessing SIRIUS XM content via your smartphone if you’re already a Premium Online subscriber, and non-subscribers can take advantage of a seven-day trial on their Android smartphones.

What do you think of satellite radio as an entertainment service? Does it compare favorably or unfavorably with other music and entertainment options available for the Android platform?