Initially we wanted to produce or licence a custom sound set, but by the time we done with the custom flight model we realised that the stock turboprop soundset sounds pretty much like the C-130 thanks to the custom flight model lower RPM etc. It's hard to tell the difference between the existing third party C-130 soundpack addons. Probably someone will manage to build a kickass sound pack later but for now we have a decent soundset included.