I have a Griffin Firewave that I have been using for connecting a set of 5.1 speakers. It has worked great for several years, but with Snow Leopard it started to make trouble, and lately it has become close to impossible to use it. Sometimes not being detected and making corrupt sound. I'm not sure if it is the device itself, or dated drivers. I was promised by the Griffin support over 3 years ago that they would soon release a new set of drivers to address some bugs that I found. They still have not released any updates, so even if the device has in general worked great, I'm not going to replace it with the same just to find out that it is the drivers, and with Lion almost out, who says it will continue to work. So I'm looking for a an alternative. Is there a similar device out there, that can use standard 5.1 Computer spakers? USB or Firewire does not really matter as I have both. But using the 3-plug setup for connecting the speakers is a requirement. The Firewave has the added bonus of also supporting Dolby Digital, and can be used as a AC3 digital to Analog converter with full surround, but my guess is that finding this will be difficult. I know there is an Ocean of USB cards out there, what I'm looking for is your experience with this and using it on a Mac?