On Tue, 2011-09-20 at 10:07 +0300, Lin, Mengdong wrote: > Does PA provide an API that can to set the active port on a > sink/source? http://freedesktop.org/software/pulseaudio/doxygen/introspect_8h.html pa_context_set_{sink,source}_port_by_{index,name}() -- Tanu