I'd like to expand my music server system to drive a second USB DAC for use in an outdoor system (yes, it's February in Chicago and I'm planning for warmer times

).
I have an XP Pro server running J River Media Center, and just purchased a HagUSB to drive my NAD receiver via SPDIF. I use an ASIO USB driver. This spring I'll retire the NAD to the second system and plan on buying a new HT Pro-Pro, either with a direct USB input or I'll get a nice stereo USB DAC to feed it. Either way, my computer would now be driving two USB DACs.
Has anyone tried something like this, or am I smokin' something? I only have one USB audio device at the moment so I can't just try it myself.