Thanks for the reply. I've posted this just in case folks come up with the same question down the road. The device will show up as external device and USB will appear to the left. It works with PT Free but you do need the proper Apple Audio Extension. Here's the link and the quote: "A few programs that do not currently work with USB audio such as Soundedit II, Pro Tools free, Deck II, or Mic Note Pad do not support ASIO. For these programs the solution is to have the Apple Audio Extension, v 1.3.3 or later installed on your computer. The extension ships with current Macs (Mac OS 9.1 CD, v 1.2). There is currently no way to upgrade this component so you must have the CD from a recent machine in order to obtain it. Logic Audio is also directly compatible without using the ASIO driver with the newer Apple Audio Extension."