Answer:Shuffling is the easiest way to get a random mix of songs. Here's how to toggle Shuffle on or off for your devices.
To turn on Shuffle in desktop, hit the crossed arrows icon just left of the back skip button in the Now Playing bar. It'll be highlighted green with a green dot underneath if it's on.
To turn it off, just click it again so it appears gray.
You can go to Your Library > Playlists > select a playlist and hit the green 'Shuffle Play' icon to start any playlist in Shuffle.
To turn Shuffle off on a mobile, go to the Now Playing view and hit the crossed arrows icon on the left again so it's gray. The playlist will now play in Custom sort mode.
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