Musiclide - Go Live Player Mu is an offline music player for Android devices that lets you play your favorite songs, and even set any of them as a ringtone or notification. You can also use the built-in search function to find the most popular songs. 

How to use it?

To start using this app, you need to download it first, you can do it by opening the app, clicking on the blue button that says "Online", and then click on the link that says "Install it now". Once you have done that, you can use the app.