Personally I'd ditch the Fireball and Sony player and replace them with a Nas drive and a Sonos ZP-90 (assuming that's the current model). Rip all the CD's into the NAS drive and control the music via your computer or iPhone. You won't be able to use the pronto to select your music. At least not in a nice, cheap manner.
I guarantee I'll tell you the truth and I guarantee I'll tell you what you need to know but I can't guarantee that I'll be telling you anything you want to hear.
