Look into Windows support

It seems discord.py for one had libopus DLLs directly in their package. A primary goal would be to mimic this.

[ ] check copyright and source of the libopus DLL binaries in the discord.py repo -- https://github.com/Rapptz/discord.py/tree/master/discord/bin
[ ] patch the opus package to include these DLLs, or alternatively add them in this repository
[ ] check that bindings in the opus package reliably works both on Linux and Windows. If the above step concluded that the DLLs are to be in this repository, make sure discord-haskell-voice reliably selects local bindings or the opus package bindings, using OS conditionals.

Looks like a tough issue. I'm leaving it on hold since I can imagine a bit of work might be needed for this, and my Windows machine isn't in the best condition (disk-space wise) to try install stack and develop.

yutotakano / discord-haskell-voice

Look into Windows support #3