[Windows 10] Seperate audios and distribute to 3 tracks: to hear, to stream and to record

Important: this guide only works on Windows 10. No idea if it could work on Windows 8 since I've never used Windows 8 or 8.1. But I'm sure Windows 7 and below can't.
Important: make sure you know basically how to configure Windows 10 (especially sound) and OBS.

There is a similar guide about using Voicemeeter Banana, you may want to check it if you don't play any music during the stream. Back to my guide, here are the situations for example:

• Phase 1: You were streaming your game which you are playing with your friends while playing your favorite music playlist. Then you got the copyright issue on Youtube. Now you just want to stream the game audio only without your music.
• Phase 2: Now you want to add no copyright sounds (NCS) music to your stream, but you don't want to listen to it, you just want to hear the game audio and listen to your favorite music.
• Phase 3: Beside streaming, you also want to record your gameplay to your local drive, and you want only the game audio in this local recording.

So here is the list of your audio sources after phase 2:

• Game
• Your voice
• Your team Discord voice chat
• Favorite playlist
• NCS

We determine which to hear, which to stream (and which to local record in phase 3):

1. Which to hear:
   • Game
   • Your team Discord voice chat
   • Favorite playlist
2. Which to stream:
   • Game
   • Your team Discord voice chat
   • NCS
3. Which to record (phase 3):
   • Game

You will only hear "which to hear", only stream "which to stream" and only record "which to record".

Phase 1

1. Download and install Voicemeeter Banana. Read the description (nah) and follow the instruction on the website.
   Choosing devices in Voicemeeter may cause Spotify to switch songs rapidly! Please totally exit Spotify while choosing. It's highly recommended that you close any media task (even Youtube tab on your browser) during the set up, something may happen to the audio renderer.
2. After you reboot your PC, right click the volume icon on the taskbar => click Sounds => choose Playback tab => set Voicemeeter Input (not the AUX one) as default.
   
   
3. On Banana panel, select your physical audio device as HARDWARE OUT (prefer WDM) (if you don't understand the panel, check this guide on OBS resources). Then turn off those A2, B1,... anywhere until your panel looks like this:
   
4. Play your music.
5. Right click the volume icon on taskbar => Open Sound settings => App volume and device preferences. Set your music source output to VoiceMeeter Aux Input. In my case, the music source is Spotify.
   
6. Done.

If you want to achieve phase 3, head to the phase 3 instruction right away.

Phase 2

Phase 3
Before we start, take a look at how to setup multiple audio tracks here (scroll down until you see it). That guide was made with the older version of OBS Studio so now if you want to open advanced audio properties, click any gear in the mixer panel. Understanding how to use the audio tracks function will help you a lot.