Mumble Problem

[yourstruly3]

Hi just downloaded Mumble yesterday, my problem is that when im in game my Mumble will be constantly transmitting, so people hear me breathe and when i use sqaud chat in game my voice echos. Im using the defualt shortcuts for mumble "H" for local speech. And I use "B" for BF2 in game squad chat. I have Echo disabled and Im using Defualt Device. Transmit is Push to Talk. For Output I have Defualt Device. Positional Audio is checked and for Positional Audio, Headphones is checked. Im not sure if its related to the problem, but when I go through the Volume test in Audio Wizard, even when I do not speak loud, I get the red bar.

Any Help would be appreciated!