Hi ​@Buster4, welcome to the Sonos Commmunity!

I’m sorry to hear that you’re having issues with playing your playlist on Sonos.

Without a deeper look into your system, I can’t see exactly what’s going wrong, however this kind of issue usually happens due to connection issues. I would suggest rebooting your network and Sonos system by powering them off for one to two minutes in this order: Your router → any additional networking equipment you have → your Sonos speakers → and the device running the Sonos app. Once you’ve done that, try to queue the playlist again in the Sonos app. If you can still only get one song to play, then I’d suggest submitting a diagnostics and reaching out to our support team, as they have the necessary tools available to look into your system and see what’s going wrong.

I hope this helps!