That would be pretty amazing if it can be done.
Noticed that you can drag/drop from the wavetable view file browser but dropping on AudioBlock causes one of those massively verbose .NET exceptions. I also noticed that clicking on the offset text field opens up a little numeric entry dialog but it appears off to the right of the gui by a fair distance and can be off screen if the gui is near the edge.
Regarding the offset, could I suggest more control over the value by using either selectable units (samples/milliseconds/seconds) of perhaps coarse and fine controls? Also a larger value range would probably be useful as currently it seems that the value is limited to ~200 (is that ms or samples?).
Awesome work. Still not able to do any serious testing, which is quite frustrating!