Hello This is a small list of steps in order to build portaudio (Currently v19-devel) into a VC6 DLL and lib file. This DLL contains all 3 current win32 PA APIS (MM/DS/ASIO) 1)Copy the source dirs that comes with the ASIO SDK inside src\hostapi\asio\ASIOSDK so you should now have example: portaudio19svn\src\hostapi\asio\ASIOSDK\common portaudio19svn\src\hostapi\asio\ASIOSDK\host portaudio19svn\src\hostapi\asio\ASIOSDK\host\sample portaudio19svn\src\hostapi\asio\ASIOSDK\host\pc portaudio19svn\src\hostapi\asio\ASIOSDK\host\mac (not needed) You dont need "driver" 2)If you have Visual Studio 6.0, 7.0(VC.NET/2001) or 7.1(VC.2003) then I suggest you open portaudio.dsp (and convert if needed) If you have Visual Studio 2005, I suggest you open the portaudio.sln file which contains 4 configurations. Win32/x64 in both Release and Debug variants hit compile and hope for the best. 3)Now in any project, in which you require portaudio, you can just link with portaudio_x86.lib, (or _x64) and of course include the relevant headers (portaudio.h, and/or pa_asio.h , pa_x86_plain_converters.h) See (*) 4) Your new exe should now use portaudio_xXX.dll. Have fun! (*): you may want to add/remove some DLL entry points. Right now those 6 entries are _not_ from portaudio.h (from portaudio.def) (...) PaAsio_GetAvailableLatencyValues @50 PaAsio_ShowControlPanel @51 PaUtil_InitializeX86PlainConverters @52 PaAsio_GetInputChannelName @53 PaAsio_GetOutputChannelName @54 PaUtil_SetLogPrintFunction @55 ----- David Viens, davidv@plogue.com