Microphone not working in source games

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http://ubuntuforums.org – (I am on Linux Mint 14 MATE 32 bit, I posted this on the Linux mint forums and no one responded to it. So I decided to give the Ubuntu forums a try, seeing how the two systems are similar) So, I've had this problem with source games. My mic, inexplicably, works EVERYWHERE else... outside of the... (Hardware)