License for the generated textures ?

Hello world !

I've ordered the BASIC version of FF, and i would like to know what is the license for the textures i generate with it ?

Just because i've programmed a software that will comes with some pictures i've drawn, but also textures from FF, and textured 2D objects i've made.

I don't know, at this time, if i will distribute this program for free under GPL license, or if i will sell it at low cost.

But about the FF generated textures i've made, can i distribute them inside my software ?
And what should be the license ?

NB: My software is a tool that emulates tokens and tiles, to play to paper RPG's. It emulates a virtual tabletop for use at home, not to use under internet.

Thanks