Feature Request: Add an in-app volume slider on the player screen

[MistarulSK786]

Hi,
I am a regular user of OpenTune and I really love the app. I would like to suggest a feature that could improve the user experience even further.
It would be awesome if we could have an in-app volume control slider directly on the main player screen (similar to the Echo Music app). Having a volume bar with mute/max icons on both sides makes it much easier to adjust the volume quickly without using the phone's physical volume buttons.
I have attached a screenshot from Echo Music for reference to show how convenient it looks and works.
Thank you for your hard work on this amazing app!

screen-20260615-213213.mp4