int id = track->mixer_id;
if( track->data_type != TRACK_AUDIO ) continue;
if( mixer->mixer_ids.number_of(id) < 0 ) continue;
Track *mixer_audio = edl->tracks->add_audio_track(0, 0);
int id = track->mixer_id;
if( track->data_type != TRACK_AUDIO ) continue;
if( mixer->mixer_ids.number_of(id) < 0 ) continue;
Track *mixer_audio = edl->tracks->add_audio_track(0, 0);