Absolutely. I've researched all of the available PC-based solutions and have concluded that, short of buying a VERY expensive program designed for playing music in restaurants, there is no PC-based solution for acheiving SYNCHRONIZED sound in all zones using software music players. My solution has been to use a standard analog multizone preamp and simply route the music from an instance of MJ to it, and then use it to control playback in each zone. Adjusting the playlist requires some sort of remote solution for controlling the software; I likely will use NetRemote or another WiFi based remote.