Hugh ... you have much influence
After reading your review of the DSM-320, I broke down and picked one up for $199 at BestBuy. Pretty cool unit. I had a lot of difficulty getting to play purchased downloaded music (had all sorts of difficulty with DRM).
Anyway ... if anyone else has this difficulty I can walk them through all the steps (it's pretty nuts ... set up an FTP server to dupe the DSM into downloading the US, not Canadian firmware) and then several uninstalls/re-installs of Media Connect. Pain the ....!
But now that it works, I am impressed. The sound quality is pretty good (not quite in the league of my Marantz CD-67SE for music) but far more convenient.
Thanks for the review (and separating me from my hard earned money!!)