Hi, I just made builds for the 1.0.1 of the python wrapper. You can download them from http://dev.davidnet.hu/python-pjsua/ There is for 2.4, 2.5 and 2.6 Python, and i used Visual C++ 2005 Express Edition. Just to mention, i builded with this content in the config_site.h for Vista/7 compatibility: #define PJSUA_DEFAULT_AUDIO_FRAME_PTIME 20 Oh and for 1.1 i cannot build, it ended with this error: ------ Build started: Project: python_pjsua, Configuration: Release Win32 ------ Compiling... _pjsua.c Linking... Creating library .\output\python_pjsua-i386-win32-vc6-release/_pjsua.lib and object .\output\python_pjsua-i386-win32-vc6-release/_pjsua.exp pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_dev_get_info referenced in function _pjsua_enum_aud_devs pjmedia-i386-win32-vc8-release.lib(conference.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_dev_get_info pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_dev_get_info pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_dev_count referenced in function _pjsua_enum_aud_devs pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_dev_default_param referenced in function _create_aud_param pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_dev_default_param pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_get_param referenced in function _update_initial_aud_param pjmedia-i386-win32-vc8-release.lib(conference.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_stream_get_param pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_stream_get_param pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_param_set_cap referenced in function _pjsua_snd_set_setting pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_set_cap referenced in function _pjsua_snd_set_setting pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_stream_set_cap pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_param_get_cap referenced in function _pjsua_snd_get_setting pjsua-lib-i386-win32-vc8-release.lib(pjsua_media.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_get_cap referenced in function _pjsua_snd_get_setting pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2001: unresolved external symbol _pjmedia_aud_stream_get_cap pjmedia-i386-win32-vc8-release.lib(endpoint.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_subsys_shutdown referenced in function _pjmedia_endpt_destroy pjmedia-i386-win32-vc8-release.lib(endpoint.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_subsys_init referenced in function _pjmedia_endpt_create pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_destroy referenced in function _stop_sound_device pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_stop referenced in function _stop_sound_device pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_start referenced in function _start_sound_device pjmedia-i386-win32-vc8-release.lib(sound_port.obj) : error LNK2019: unresolved external symbol _pjmedia_aud_stream_create referenced in function _start_sound_device ..\lib\_pjsua.pyd : fatal error LNK1120: 14 unresolved externals Creating browse information file... Microsoft Browse Information Maintenance Utility Version 8.00.50727 Copyright (C) Microsoft Corporation. All rights reserved. Build log was saved at "file://c:\Downloads\pjsip\pjproject-1.1\pjsip-apps\build\output\python_pjsua-i386-win32-vc6-release\BuildLog.htm" python_pjsua - 22 error(s), 0 warning(s) ========== Build: 15 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== As i red the problem will be with the new Sound API. tsabi