The noise is interference from the DC-AC invertor, it's fine if there's a small load on it (like under 50W) but once I put a larger load on it, my speakers buzz (even when playing CD's, so I know it's not my aux input cables).
Right now I just have winamp autoload and start playing my full playlist on shuffle when the pc boots. In the future I'll add a regular LCD screen, keyboard, and a DVD drive.