Hi, > To control volume, you need to set the volume on a pa_cvolume and then set > the volume on the device with this struct. something like > > one sink_info* s (passed in) > > ??? pa_volume_t new_volume = pa_sw_volume_from_linear(linear_input); > ??? pa_cvolume dev_vol; > ??? pa_cvolume_set(&dev_vol, s->volume.channels, new_volume); > ??? pa_operation_unref(pa_context_set_sink_volume_by_index(pulse_context, > s->index, &dev_vol, NULL, NULL)); I am using simple api. This is a problem? Because I don't have a pulse_context. Sorry but I am new about pulseaudio :) thanks a lot -- GL