For anyone who actually is testing the VOIP stuff, I updated the beta DLL again. You can download it at: http://files.pioneer2.net/voipdll/ephinea.dll There's been a bunch of performance improvements in the code. Mostly the way the buffers are handled and no longer using mutexes for each client's jitter and decoding buffer. (Switched to a circular buffer for each client, if you want to get really technical about it.) The mixing code for audio has also been improved and slimmed down.