Change the audio device which the keyboard volume keys control

Took some time looking around but I found a program which both lets you set the volume keys to control another Sound device & views an OSD with the volume when you change it.

Its called Volume2 (https://github.com/irzyxa/Volume2)

You can assign keys for managing the alternate sound device. For example, I set my wireless headphones as default device (for calls) and my earphones as an alternate device (for music). I need to set shortcuts for alternate device and now I have vol up/down for headphones and shift + vol up/down for earphones.

It also lets you customize the OSD Displayed with different skins & colours, and Position & Transparency, it can be installed or be a portable version.

It's easy to use & it can a lot of stuff I don't use but others might want to.