The idea is that soon we will show the soundtrack extending between the start cue and the end morph.
addMorphsTo:pianoRoll:eventTime:betweenTime:and:
Ignored -- all display is done by the starting morph -- see superclass
encounteredAtTime:inScorePlayer:atIndex:inEventTrack:secsPerTick:
If being shown as a clip, then tell the clipPlayer to start showing this clip
movieFileName:image:player:frameNumber:
pauseFrom:
Ignored
resetFrom:
resumeFrom:
thumbnailHeight
