Updated background music so that it's an Iterable over Sequences and these sequences may now be transposed as the mood changes.
Merge branch 'master' of https://github.com/jonhare/WAISFest13

Conflicts:
	FlickrVisualisations/src/main/java/uk/ac/soton/ecs/wais/fest13/sound/midi/MIDISoundTranslator.java