I just purchased dsm-750 to use as an extender for vista and to play dvr-ms (hd) files from my xp MCE2005.  I am having several issues.
1. Every time I play a dvr-ms.  The audio seems to either be real choppy or no audio at all.  I  don' think its a network issue since it does it from a usb source.
2. I can't play any video content from a recorded tv show, live tv  or a the online night news shows.  If i try to playany of these features  it will  hang for a long time(several minutes ) I will then get an error "application error"  "a critical widows media center process has fail."  blah blah blah.
Does anyone have insight to what might be wrong