Hello, I am trying the FS sample Flex client for TTS and speech recognition. The TTS sounds OK. I use Nuance MRCP v1 server with Nuance recognizer 9. The problem is that I hardly get the recognition result,only occasionally I got some simple words output like "repeat", "ok" which were not I said. The whole recognition setup works well when I use a telephone line but basically not work by using the flex client from a web broswer. The recorded voices in FS which were sent from the web browser via the flash rtmp sound fine. I guess it may be the audio codec issues. The flash rtmp uses Speex. My mrcp profile specifies the codecs as "PCMU PCMA L16/96/8000" Is there a way to automatically convert the Speex audio to the mrcp required formats during calling the system? Or what should I look at to get the proper speech recognition via the flash rtmp? Many thanks! Xing -- Heriot-Watt University is the Sunday Times Scottish University of the Year 2011-2012 We invite research leaders and ambitious early career researchers to join us in leading and driving research in key inter-disciplinary themes. Please see www.hw.ac.uk/researchleaders for further information and how to apply. Heriot-Watt University is a Scottish charity registered under charity number SC000278.