I did actually answer this previously... last week. maybe some more details will help: OS: winXP pro, version 2002, Service pack 3 Hardware: Dell Precision M4300 soundcards: internal SigmaTel card RME Multiface on pcmcia CPU Intel Core 2 Duo, T7700 2.4 GHz ** Please note that portaudio works on this machine. It works with csound 5.08 binary installer downloaded from soundforge, and it works with my own compiled csound version. So it seems to me there must be something with the 5.09 binary installer. Oeyvind 2008/9/24 Michael Gogins : > And what is your operating system and version, and CPU and version? > > PortAudio with ASIO does work for me. > > Regards, > Mike >