Gsherwood53--what file format are you using for your rips? Currently I have everything ripped in ALAC format, but I'm considering reripping in AIFF. I don't really like the WAV format as it only supports navigating in a file-folder structure from the Sonos controller. I'm using a stock ZP80 into a PS Audio DL3, then on to a Cary SLP-03 pre and Mac MC252 amp.