You can improve on the Sonos a lot with a resampling reclocker.
If you want the best SQ possible, then get an async USB converter with HDMI I2S to your PWD. You must locate a Mac Mini at the audio system and run iTunes and Pure Music on it. USB cable to the converter. You can control the Mini from upstairs Mac or an iPad and spool your music from upstairs disk. Rhapsody can be wireless from the Mini. The computer upstairs does not need to be involved in Rhapsody.
iTunes Remote controls everything. Its free.
Steve N.
Empirical Audio
If you want the best SQ possible, then get an async USB converter with HDMI I2S to your PWD. You must locate a Mac Mini at the audio system and run iTunes and Pure Music on it. USB cable to the converter. You can control the Mini from upstairs Mac or an iPad and spool your music from upstairs disk. Rhapsody can be wireless from the Mini. The computer upstairs does not need to be involved in Rhapsody.
iTunes Remote controls everything. Its free.
Steve N.
Empirical Audio