I just realized that I'm now working since 14 years on this
little C++ sound library which I called irrKlang. Today I pushed out a smaller update of it, modernizing it a bit again. Improving .NET support, support for gcc 5.1 and others, reducing dll dependencies (no MSVC runtime dll needed for C++), improving single threaded mode stability and speed, and more.

It is not only used by many indie games, but also by my own projects, of course. Basically everything I wrote which uses audio. Let's see what the next 14 years will bring!