Ruby-Fmod is a little binding of Fmod inside Ruby.
The objective is to make a sufficient library that helps to easily play sound inside LiteRGSS by only writing a little Audio module in Ruby.
See explications there : https://github.com/NuriYuri/LiteRGSS#how-to-build-lite-rgss--under-linux (it also applies to this if you replace LiteRGSS by Ruby-Fmod)