After searching here and elsewhere on the internet for a solution and submitting a support ticket myself (to which I received an absolutely useless response), I still can't get a meaningful answer to this question. It's hard to believe that I would be the only one who found this specific issue to be problematic. Here is what I just sent back as a follow-up response to my still open support ticket. Maybe someone else here can shed better light on this than a Presonus tech:
Here are the facts:
1) WDM stands for Windows Driver Model
2) Non ASIO programs (usually anything other than a DAW) utilize and can ONLY select from the WDM input and output options that Windows provides (under “Sounds” Recording/Playback)
3) Windows determines these system-wide DAW input and output options based on properly written and configured WDM drivers
4) The StudioLive 24.4.2 AI is BOTH a "live board" AND an "interface" and was marketed as very robust and capable in BOTH categories.
5) The StudioLive interface software (Presonus UC) allows for 8 routable WDM Inputs and Outputs
6) Windows is ONLY recognizing a single stereo WDM input and output for the Presonus StudioLive “interface”. Presonus UC should be able to notify Windows, based on how the 8 WDMs are routed by the user, that there are either 8 mono WDM in and out options or 4 stereo WDM in and out options that can now be provided to any program installed on the system.
After TONS of research (about 2-3 weeks worth) on my part, here’s the real question to which Presonus has not answered adequately for any similar inquiry in the online discussions…
WHY does Universal Control offer routing for EIGHT WDM ins AND outs if Windows is only able to recognize TWO each (specifically WDM 1 and 2 in/out)??? No matter how WDM’s 3-8 are assigned in UC, Windows does not recognize them and cannot offer them as additional WDM ins and outs that can be used by non ASIO programs…which, again, account for MOST programs other than DAW’s. This is a nightmarish limitation for such an AMAZING piece of equipment and such and AMAZING brand. It has caused me to have to add a cheap TASCAM 2 channel interface to solve my issue temporarily…and the TASCAM actually interfaces with Windows properly…giving 2 separate selectable WDM ins and outs ANY program on the system can choose from.
My determination is that Presonus UC was not written to properly interface with Windows. If I am wrong, please explain in detail the purpose of the EIGHT routable WDMs when Windows can only recognize and utilize WDMs 1 and 2…with WDMs 3-8 being completely unseen by windows and, therefore useless. If I am right, please have someone correct this in an update to UC as soon as possible and give all of us a time-frame in which we can expect such a software/driver fix.