GetAudioMixer
status_t GetAudioMixer(media_node* _node);
if (roster->GetAudioMixer(&node) == B_OK
err = roster->GetAudioMixer(&node);
fStatus = fMediaRoster->GetAudioMixer(&fAudioConnection.consumer);
error = fRoster->GetAudioMixer(&fAudioMixerNode);
err = gMediaRoster->GetAudioMixer(&audio_mixer_node);
status = fRoster->GetAudioMixer(&fGainMediaNode);
status_t status = roster->GetAudioMixer(&mixer);
roster->GetAudioMixer(&systemMixer);
roster->GetAudioMixer(&systemMixer);
err = BMediaRoster::Roster()->GetAudioMixer(&node);
fInitStatus = roster->GetAudioMixer(&inputNode);
roster->GetAudioMixer(&mixerNode);