I'm not sure for the Mac, but the generic Windows audio driver isn't any good. This product comes with no audio driver - the idea is to rely on the built in driver in Windows/Mac.
The audio specs aren't very good, so don't expect sonic heaven - but it will be okay for starting out of course, if you can get it to work. The 'Lightsnake' is built on a good idea of keeping things simple, however it seems to have gone a little too simplistic.