add IO.Audio.ImportWav to exposedModules

make available for use (+1 squashed commits)

Squashed commits:

[6e8310f] add importWav to other-modules, maybe better in modules?
import stereo .wav

stereo .wav come as lists with left right channels consecutively listed
just need to tuple them up for an appropriate import (+3 squashed commit)

Squashed commit:

[5d65a15] remove useless comments

[41fbf90] idea behind importing stereo .wav

[f4209fc] a bad fix for 50% speed bug, takes 50% of samples