Not currently, I just ran a test demo and the client loaded then the demo.
Make sure you're putting in the -demoplay line here:
Then hit OK and PLAY NOW as you normally would.
You could also look into the demo launcher created by Zloth many moons ago. It's still out on the web for download (requires the same .NET Framework as MIDS, though). I fired it up this morning and it still works like a charm.
More info and a link to the download can be found here:
http://home.roadrunner.com/~dasloth/...DemoLaunch.htm
I'm having the issue where when I try to run demorecords the client launches but never fully loads.
Anyone else having this issue?