Is anyone still using these? Do they provide an advantage in sound quality? I'm considering buying an 11" air and thunderbolt display soon, and I'd like to use my logitech 5500s. Aside from the optical issue (it's my understanding that there is an adapter that allows you to plug it into the macbook and get surround sound) my main gripe is that the TBD has no audio ports. It kind of takes some of the magic out of the concept for me, if I have to plug in/unplug more cables to the air when I dock and undock it. So I'm wondering if an external USB sound card that I leave plugged in might be a good solution. Does anyone have modern experience with this? I used to have one 6-7 years ago and it seemed to work alright, but I rarely see them anymore. Ideally I'd like something that allowed me to use optical.