Thanks for your interest in this. Yes, on the Speaker Properties panel of the Mojo driver, Allow Exclusive Control is selected along with Give Exclusive Mode Priority. On the Enhancements tab the Disable All Enhancements is selected. On the Advanced tab, the highest resolution available (32-384) is selected. Level is set to 100%.
Likewise, in JRMC on the Options panel under Audio Device, Open Device for Exclusive Control must be chosen or no sounds at all will be the result, regardless of file format.
But you are on to something -- Microsoft does say in the press release as follows:
"Some things that we are already aware of:
- Our class driver does not support ASIO
- Our class driver does not work in WASAPI exclusive mode in certain applications"
So it is of course entirely possible that JRMC and Foobar are among those apps in which case I suppose all we can do is to wait for the next update.
Have you been able to get it to work on your machine?