Thanks for everyone's comments.

johnmcelfresh, I do have a recently purchased 568 and 596 along with the DSP 5200s. Could you described your set up in little more detail ?
Also, do you have a dedicated music server ?
Thanks in advance.

System 1: DSP5200, G91A, Sonos, Hitachi 55HDX62
System 2: DSP5000, 596, 568, Sonos, Hitachi 42HDS69