Line Input on Soundcard muted on connect???

[Nolubez]

Hi, notice that whenever I login to a CS Source server, half-life mutes my Line-In on my sound card and un-mutes my Mic-In...

Is there any way to stop it from doing this? I listen to music from another computer while playing CS that comes in on my Line-In to my computer speakers... Anyone experienced this?

Thanks!
-Nol