Feat: Button to stop all tunes and start fresh

Hey @DhanushNehru, this project is interesting to work on. I would love to contribute to this by adding the following features :

**Why this issue ?**
- A button to turn off current tunes, so that user can start remixing from fresh
- It also addresses the bug to stop the current music once the user logs out...the tune keeps playing after logout too

Kindly assign me this issue under hacktoberfest, so that i can raise my PR soon !