mip-map edits not updating

[aldo-aguilar]

currently if you modify an audio clip, the mip-map will remain the same, we need to update the mip-maps when an edit is made / if sync is called from the iphone.

this is the original region of audio

now if I cut out this small region, the iphone will still have it:

[hugofloresgarcia]

closed since we're getting rid of the scrubber