The whole setup is built around a Whisper Room isolation booth - 7 foot high, 5 foot by 3 foot, carpet covered room with doubled windows. Inside are two microphones - a Shure sm58 for vocals and a Shure sm57 picking up the guitars.
These are running to a control station outside the booth - an Alesis Mictube duo preamp brings them into an Alesis Multimix 8 mixer, with two channels going straight to USB, into a Dell studio xps running Windows NT. Here, Shoutcast for Winamp is used to stream the audio signal and Audacity can be used to record.