Everything I have is ripped to FLAC via EAC and stored on a music server. I play it on another PC in my soundroom using the latest version of Foobar.
1. Music server in my office:
Pentium 4 2.0G, 500M RAM, 3 300G Seagate HD's, and a Plextor CD burner (not DVD). It's in a Nexus case, Zallman fans, fairly quiet, large, with big fans and nice power supply... Very nice machine.
2. HP Slimline in my sound room:
Pentium dual core, brand new, 1G RAM, 160G HD, spdif out, USB, etc. I use this kind of like a dumb terminal to get music from the server in the office.
3. Scott Nixon's USB Tube DAC
Cryo'd and treated Sovtek tube in it now.
3/'future'... Will be Scott Nixon's multi-input DAC which has a lot of new features... will talk about it when it arrives.