Webcasting Setup:
I'd hoped to try both Sam (using my PC) and Nicecast (on my Mac), but ended up just using Nicecast to stream because of lack of time. I'm hoping to try out Sam in August. I've included the details of my PC below too, as I've been using both during the Skypecast, and for recording.
PC: AMD Athlon XP 2200+ 1.8 GHz, 768MB RAM
Mac: Mac Mini (Power Mac 10.2), Power PC G4, (1.5)
As I said above, I've recently been using Nicecast to stream the audio. At first, I found it easier to concentrate on managing the hosting of a Skypecast, and while I was doing this I played with capturing the audio using various tools, from Audio Hijack (on the Mac), Audacity, and PowerGramo and Hot Recorder (on the PC).