This will result in increased image size, on the order of 18k->32k, but
I'm fed up with the blurriness of the current images. Ideally I'd move
to SVG for the web images, but Mick reckons that SVG support on mobile
browsers is still limited. Suspect he's probably right.
The aim of MIDI and MP3 is to allow the user to hear what a tune sounds
like. For transposed bookes, I think this should be reused from the main
booke page, because hearing it at the transposed pitch isn't a major help.
And in fact given the way cello transposition is done, the sound won't
be transposed anyway. And Jane hasn't complained.
This will speed up building the bookes by removing audio generation,
the slowest process, from the transposed bookes.
Jim Hague