Further comment (because I've continued to play with it, because I think it's awesome): I've found a couple of tracks where the time (in green on the right as

Further comment (because I've continued to play with it, because I think it's awesome): I've found a couple of tracks where the time (in green on the right as it plays) was given as "NaN:NaN". That's probably not a desired behaviour. (fwiw the track was "Thunderbirds Are Coming Out" by TISM)