I have completely revamped my older tutorial here: Discord Bot for Syrinscape to get Stereo Sound and this time I am using the Syrinscape Fantasy Player (which is much easier to install and use). This also will let you use other audio devices and configure them.
Hopefully this one can help some others out that might not like the online player or want some other ways to connect audio to Discord.
Any comments or suggestions on the video are welcome, hope this helps someone out!
If you have ideas for any other tutorials, let me know!