One suggestion that I have, have you thought on the commands section to add a mute or lower the default volume? The reason I ask is because I currently have a setup with with MS Speech where I send the sound out to a second stream audio and reinject that into an input on my main stream audio card. All that to be able to lower or mute the volume of the voice directions while I'm on the phone using handsfree Mobilephone plugin from Lambo. This setup I made works very well, but it will be pretty nice if I could avoid all this process.
Thanks again for your excellent work!!!