Lapdock 500/Droid4 audio pass-thru fail with GTalk

[xmiinc]

I know this is/was an issue with the Photon and the Lapdock 500 at one time (with earlier versions of Webtop?), but I seem to be having something similar now (using Webtop v2.0.0-139): when using GTalk (videochat) the audio I hear is coming from the phone speaker, with the phone itself tethered behind the screen. Even at full volume, its very tinny, barely audible, audio. But if I play a music file, using Music Player on the phone, that gets routed loud and clear through the lapdock speakers. Anyone have any idea what's going on? Thanks, Tom