Good program at the moment, but you might want to wait to download any updates for a week or so after availability, because little fixes for the updates keep dribbling out with annoying frequency for a while afterwards, requiring repetitive updates of the updates.
I downloaded the demo version (free) to take a look at this app. I created a Superstring file with lyrics and exported it (as .flv). The file won't open. So, I exported it a second time. Still, it won't open — not even with the latest version of Adobe Flash CC 2014.
I downloaded the demo version so I can see how this looks. But, I'm batting zero.