I downloaded the free version and it works fine but only records 80% of the original recording, so it makes you have to buy the full version. Since the Keynote for IPad can only link to media files to insert into presentations, this seems the best solution.
So the free download works fine and, in my case, changes AVI to MP4 and on Sync puts into the media file... Great. Need to bite the bullet and buy the full version approx £16.00 ...
Thanks