Doug...
Good news, I got it fixed. What I ended up doing was doing the load command for each sound [ie. 11 (sound_Pull_Up, enum)] in an INIT.XML that runs once at startup. This loaded all the necessary sounds to the VOICE device, as the README says.
Once I did this, the Betty sounds played only in the headset and when I DISABLED the headset in Win7, it played them thru the main speakers. Ding Dong, the Witch is dead!!
Much thanks for this gauge, works like a champ, as advertised.
However, FYI, in testing, another problem that came up was having multiple secondary playback devices enabled (by windows default), such as an X-Fi Titanium DIGITAL LINE-OUT, listed in the Windows playback section. This caused several other secondary sounds not to work on the main speakers, even after I had gotten the headset Betty calls working.
For example: in using JR's Gun HUD, and Serge's BlackBox Betty gauge... I got the Betty calls working in the headset and the "gun blast" working on the main speakers but the "button clicks" for the HUD control panel (should go to main speaker) were going off to somewhere else. So I DISABLED all the other Win7 Playback Listings except the X-Fi Speakers (default speakers) and the Headset (default Comms) so now all main speaker sounds, such as "gun blast" (speakers), and "panel clicks" (speakers) work as they should.
Later
Sludge