Good day!

Thank you for your kind suggestions, thanks to which I've been able to add improvements to the app.

Key Features

Windows Key + Scroll - Adjust volume

Scroll on Taskbar - Adjust volume as seen below

Scroll on any Taskbar App - Adjust volume for app as seen below

Additional Features

These features can be enabled in the settings.

Scroll on JustScroll Icon - Change playback device.

Mouse Side Buttons on Taskbar - Change playing audio track.