Sound Error?

In ventrilo my green light seems to stay on all the time even when I'm not talking. I tried messing with some settings and got it just right and then boom the green stays kicked on again. I've tested so many things and run out of ideas. Best I can come up with is my audio port is messed up because the green light stays on even when I unplug/mute the mic. The only way I can get the green light off is to mute the mic with the mute check box in vent. Any ideas on a fix? Please help!!!

Got the same problem with teamspeak few days ago but when the green light started glowing all the time my mic didnt work O_O then restart the program and it worked again for some minutes. I solved the problem by changing from the default primary input/output device to the drivers for my sound card (mic is implemented there afaik).
Ventrilo will be different but you should find a compareable option. Here a pic

I believe that's what I have it set at but I will check. Thanks.