Use a SoundBlaster AWE64 gold (its Linux compatible) or any other card that has an s/pdif output. This is a digital output that bypasses the d/a converter in the sound card - hence less noise. If your amp already has a digital input you are all set, otherwise you will need an external DAC.
Nitpick: XEN will run on multi-processor machines. Each guest domain has access to only one CPU however. This will be fixed in the next major release.
I believe the 64-bit support for x86 chips is in the works too for XEN.
From Tom Liston's site:
"Ignore files in directories like Windows\$NtUniinstallKBxxxxx\ and Windows\WinSxS. These are old versions left behind for uninstal purposes."
Use a SoundBlaster AWE64 gold (its Linux compatible) or any other card that has an s/pdif output. This is a digital output that bypasses the d/a converter in the sound card - hence less noise. If your amp already has a digital input you are all set, otherwise you will need an external DAC.