markerTrack = new MarkerTrack( this );
markers = (MarkerTrail) markerTrack.getTrail();
markers.copyFromAudioFile( afds[ 0 ]); // XXX
tracks.add( null, markerTrack );
audioTracks = new AudioTracks( this );
actionSave = new ActionSave();
actionCut = new ActionCut();
actionCopy = new ActionCopy();
actionPaste = new ActionPaste();