To get music offline, choose a radio station to play and press record at the beginning of a song you like. Once you’re done recording, press stop, and the recordings will be in your Library. Please note this feature will only work on the radio integration.
Here is how to do it -
1) open the "full-screen player," tap the music controller at the bottom of the screen.
2) To begin recording, tap the record station button.
3) To stop the recording, press stop or pause music.
And to locate your saved recordings, follow these steps:
1) Go to the Music tab.
2) In the top right corner of your screen, tap the library symbol. All the recorded music will be saved there.