Hi guys,
Actually the retranscribe will only change the notation that you see - it does not change the performance of the file (how it sounds.)
Right now there's not a "presto" button that will change the performance to a swing performance, but you can use the Piano Roll to edit the performance. Ralph Rayner has given a nice overview of that process somewhere here in the forum. I'm a bit busy at the moment and can't look it up, but you can Search for "Ralph" and "swing" and come up with a number of good posts
ttfn,
Sherry