Wow, well this is just ridiculous (also... boy, it's been a great week for fixing stuff on my computer, eh?), but apparently steam can only use the "default" mic, which for some reason it thinks is.... my audio card? I opened up "configure audio devices" and it has the audio controller as an "inactive card" and it's set to "off" but, yet, Steam wants to use that as my "default" mic, so.. I don't know if there's a way to mark my mic as the "default" microphone, I'm not seeing any options, can someone help me out here?