Audio on RF

I monitor the audio going to my SignaLink. I hear occasional sounds going out to the external codec when they should be directed instead to my local speaker or Headphones. This is most frequently heard when a 'Connected to station' event happens, occasionally when 'Incoming connection request' event happens. The sound is coincident with the start of my digital transmission. It happens to my friend also. I hear some sounds on his RF occasionally, when I am not talking with him. We are both computer literate (Geeks) and know all about setting some devices for Default and others for Communications default. It seems that there is a race condition in the code someplace that tries to put out the sound at (nearly) the same time as it starts the digital signal. Check it out.