* @param instrument plugin info for the instrument to insert pre-fader, if any
*/
list<boost::shared_ptr<MidiTrack> >
-Session::new_midi_track (boost::shared_ptr<PluginInfo> instrument, Plugin::PresetRecord* pset,
+Session::new_midi_track (const ChanCount& input, const ChanCount& output,
+ boost::shared_ptr<PluginInfo> instrument, Plugin::PresetRecord* pset,
RouteGroup* route_group, uint32_t how_many, string name_template, PresentationInfo::order_t order,
TrackMode mode)
{