I tried the demo but found it full of bugs and weird behavior. Some of that is BIDS "Built-In Demo-Sabotage", but so many functions don't work right so I can't tell what's BIDS and what's BUGS.
1st, BIDS is random mayhem: audible tone, pitch changes, etc.
Loop function doesn't work.
The entire screen will start rolling as the time line continues moving.
The worst demo experience I've ever had. I sent more time trying to figure out the mayhem instead of using the program.
If they really want you to see how their software works, they're doing a very poor job.
On the + side, the 15 day limit seems to last beyond 15 days.