Sirius has a web client you can use to stream their music to your computer, but it’s pretty lame (or it was last time I checked). Enter NiceMac LLC, creators of StarPlayr for Windows [alpha, download], Mac [download], and soon on the iPhone.

StarPlayr’s features include setting presets, choosing a high or low bitrate, tracking what songs are playing on stations, and a one-click button to Amazon’s product page for the CD of the song that’s playing. It’s somewhat tricky to figure out at first without looking at the documentation, but once you figure out what the buttons do, it’s easy to navigate and use. It doesn’t look like it’s synced with the new channels, but a new version of the software is expected in early 2009.

There’s also a lighter version of StarPlayr called StarLight (Mac only) that’s worth checking out.