Hi , Integrating Audio Routing API is quite simple . I have downloaded the audio routing API plugin from Nokia site and copied them into the SDK folder . The following lines have to be added to the StartPlay function in sound_symbian.cpp file . CAudioOutput* iAudioOutput; iAudioOutput = CAudioOutput::NewL(*iOutputStream_); CAudioOutput::TAudioOutputPreference myOutputPref = CAudioOutput::EPrivate; iAudioOutput->SetAudioOutputL(myOutputPref); I have attached my symbian_sound.cpp file for reference . Also add the following libraries to the the exectubale's mmp file . audiooutputrouting.lib mediaclientaudio.lib -- Karthik -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080731/bab51896/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: symbian_sound.cpp Type: text/x-c++src Size: 25520 bytes Desc: not available Url : http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080731/bab51896/attachment-0001.bin