Hello @DouglasD , welcome to Sonos Community!
Please have a look at the following Support Article Shuffle, repeat, and crossfade songs , more specifically the below point:
Shuffle
Tap the Shuffle icon to randomize the song order in the queue. On mobile devices, navigate to the Now Playing screen and tap the
Queue icon to view the queue and show the Shuffle icon. On a Mac or PC, the Shuffle icon is located at the top of the screen in the Now Playing controls.
I’ve done a small research on how random shuffle is with different sources in the Sonos App. Tested on YouTube Music, Spotify and Music Library uploaded tracks and noticed a very different queue every couple of shuffle button presses.
It might have been luck by definition of randomness, though I do understand there is a chance specific tracks being repeated more often.
Is there any way to teach the algorithms to shuffle through the list more thoroughly?
Maybe some extra checks and flags on each shuffle button press would help, making it less random in a way.
I’ve marked this thread as a feature request and forwarded it to the appropriate teams for consideration.