Got the same issue..and somewhat got it sorted now..
problem i had was that i could only use my speakerset.. headset was in no way working.
a sort of fix is the following (at least for me)
- go to control panel
- There you'll see speakerset/headset/SPDIF.
- Rightclick Headset and select Set as default
when you rightclick on Headset and choose 'Test' then you'll hear the test sound through your headset... If you choose 'Set as default', then your headset will work (but your speakers won't
). so you'll have to change this setting each time you want to change between speakers/headset.