Once you've opened the Excerpt Service page for a tune, you can request that the excerpt service provide you with a score that is playable by a tranposing instrument.
	By default, the "Display" menu selection is as "in concert key". The other options on this menu read "Tranposed For F Instrument", Transpose for Bb Instrument", etc. Each of the 11 tranposition possibilities is listed.
	If you change the menu to another setting and press the Play button, the score produced for the excerpt will be rewritten in tranposed form so that instruments of that type can play in the same key as the MIDI sequence that is produced.