Noisy sounds with glfw and not working windows file dialogs cause of CoInitialize with COINIT_MULTITHREADED parameter

[dreaw131313]

Soloud version: most recent commit from master
Operating system: Windows 10
Backend: WASAPI

I am implementing audio to in game engine, and I faced two problems/issues:

1. I am using GLFW for creating windows and when I call "glfwInit" before "SoLoud::Soloud::init()" playing audio have noise
2. When I try open file dialogs with windows api it will not work. I figured out that is because SoLoud wasapi backed calls "CoInitialize(): with COINIT_MULTITHREADED, and I think it is also related to my first problem.

So workarounds are simple, first I need create Soloud instance and then call glfw init. For second problem I found workaround, just to create new thread and open dialogs from it. But maybe there are simpler solutions to resolve this problems with changes to wasapi backend implementation. I need to add when I changed "CoInitialize()" function to use COINIT_APARTMENTTHREADED audio was noisy.

These may not be serious problems, but this issue may help resolve them for other users.