Play captured VoIP call

Hi,

When I capture a voip call and go to "Telephony -> VoIP Calls -> Player -> Decode" and select both directions, only the one selected first can be played.. either one.

However, if I check both streams to play the complete call - and only one direction can be heard, the timeline follows both directions.

Weird thing is; if I "Save payload", select "both" directions and format .au, then I can hear both directions when I play that saved .au file.

Any solution? I am using WinXP SP3, latest Wireshark v1.4.4.

Thank you :-)