This was my recording setup, right in my bedroom, in late 2005 - early 2006. The Apple PowerBook G4 is more than powerful enough to record audio and MIDI using GarageBand, Deck, and some other Mac software. The M-Audio Ozonic controller sitting in the keyboard drawer lets me input that MIDI data, and also doubles as a FireWire audio interface; the Danelectro 56-U2 is plugged directly into the Ozonic, and I can plug my microphone into it as well, though that item and my other guitar and bass are out in the computer studio.
