Hi Rachel, I'm linking the pjmedia library to my project. Therefore I was expecting all object files belonging to pjmedia to be in this library. All other pjmedia ports have been, but the bidirectional port was not. Therefore I was thinking someone forgot to include this dependency in the list of files to include in the pjmedia library. I'm using pjproject-1.4, I'm nut sure if there differences to 1.3 in this point. Best regards, Thomas > If you have compiled properly, you'll find 2 object files > libpjmedia-audiodev-i686-pc and libpjmedia-codec-i686 in > C:/pjprpoject1-3/pjmedia/lib. > >I presume the makefiles would be written whatever we compile. Maybe you can > try re-compiling the source(pjproject-1.3) and try the audio thing. > > The bidirectional port worked fine for me. > > Regards > Rachel