I bought Zoom Search Professional and FlyingAnt - and I like it very much
I intend to create e.g. CD catalogues. If I understand you correctly there is no royalties per disc fee, right?
But the CD user can view my purchased flyingant username and key in flyingant.conf. How can I make sure that theses informations cannot be misused?
Correct, there are no royalties per disc.
Yes there is a risk of misuse. But we couldn't think of a better option at the time and we considered it unlikley that any serious developer would want to include a key that obviously wan't issued to them (as the key has your name in it).