Alesis Multimix 8 USB 8-Channel Mixer Spdif System "sigmatel hd audio xp" Questions

...HD; 3 Gb RAM; built-in Sigmatel audio. USB 2.0; Firewire; Tested audio products: - (all w/updates). XFi Extreme Audio; - (audio, but no 'stereo' mix option) EMU 1616; - (incompatible w/Express PCI ...