Hi Rodolfo, thanks for the question. The answer is no, i have never used GB studio sadly, however i would gladly remake/convert/make new sound effects for you. after a small amount of research on GBS, it appears they use .uge now? I could be wrong but the program looks very interesting. You can get in contact with me at the656officialpod@gmail.com, on twitter @the656official (I haven't used twitter in a long time but i might see it.), or on discord Harvey656#3813. Let me know if I can help you!