I run my K3 remotely. It has the sub receiver for split operation. I'm currently using Skype for audio, but since only mono, the main and sub audio streams are merged. Would be nice to have stereo to keep the two receivers separate in the earphones. I don't need or want video conferencing, just audio. Also some time ago I tried Mumbles as an alternative to Skype. Worked ok (but just mono, like Skype) but some audio artifacts when listening to very weak audio. So I went back to Skype. Any stereo suggestions?