Catpig Studios has released Radium, an XM Radio Online client for Mac OS X. A trial version is available for download. The software is priced at whatever you think it’s worth.
The trial version lets you listen for 42 minutes at a time. Once you register — by paying whatever you think is fair — that restriction is removed.
System requirements call for Mac OS X 10.5 or later and an XM Radio Online account (you can sign up for a trial account for XM Radio Online).
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