That's with the TASCAM. I just tried it with the Avid Rack and I get 18ch with with ASIO but 12ch with WASAPI.

Yes I remember trying that Exclusive thing with ASIO4All but the only thing that worked for me now as I remember is Vista Midi Fix
http://www.benryves.com/products/vistamidi
this sets the default midi output device for Windows, and I set it to Coolsoft, see before after below:

Attached Files (Click to download or enlarge) (Only available when you are logged in)
ASIO4ALL-Error.jpg (97.07 KB, 99 downloads)
ASIO4ALL-Vista-Midi.jpg (95.69 KB, 99 downloads)
002Rack-ASIO.jpg (171.74 KB, 99 downloads)
002Rack-WASAPI.jpg (204.26 KB, 99 downloads)