It was originally written as a C DLL utilized by a Visual Basic front end. The C DLL used the Win95 API, though, so it wouldn't have worked on anything but Windows 95 and onwards. I subsequently ported the entire thing to C# but still using the same API to do the actual playing of the audio (I experimented with using DirectSound instead but that was really not appropriate for an application doing its own audio mixing). Now I'm working on an iOS version and I couldn't give two fucks about Windows at this point.