byte
0-3	'wavt'		as text/big-endian-
the rest of the data is in little-endian types
4-7	wave_size 	size of each wave, max: 1024 (v1.2)
8-9	wave_count 	number of waves, max: 512 (v1.2)
10-11	flags
12-end	wave data in float32 format. 4*wave_size*wave_count bytes



