You can't.

Honestly, in the New App you can't do it.

The Sonos suggested workaround is to replace it with a different queue.  Maybe one you already have that's the same as the one you're playing but with the extra track…..

But you can’t even create a new list using the new App! Every track you want to add simply replaces the entire queue. 
 

Thankfully, I only updated the app on one of my devices, and still have the older app on other devices. I’m hoping I can still use the older app until they fix everything that’s broken with this new app. This app definitely wasn’t ready! 

I agree, but it does look like the feature is perhaps coming to the new App, because the images/animations on Sonos.com here, do show this…

See here: https://www.sonos.com/en/controller-app

Also see attached animation.

Thanks for posting that, which makes me feel a little better. I hope it won’t take too long to fix because this is a feature I use a lot.

I use the feature a lot too. Hope it returns soon.

Very frustrating, just downloaded the new version today on my phone.  I use the add to queue function all the time.  Glad I only updated on my phone and not my iPad.  Hopefully they get this straightened out soon.

Blimey! That’s pretty core functionality to miss out?

Use Case 1: user is listening to a song and wishes to line up a few songs to play.

 “Yeah, we’ll just add that at a later date…”

It's really hard to understand why they'd roll out a new app without this feature.   Who only puts on 1 song?  Shame.

Does SONOS do anything with these community discussions?  I am experiencing extreme frustration with the new app and it seems to me that it being pushed to market without the ability to add songs to the queue, adjust alarms, etc. Should be cause for someone to lose their job.  This is some bonehead stuff.

I really hope they sort this out soon.

Having the same problem and cannot imagine how this new app passed a basic functionality test.

Extremely disappointed with Sonos for this as my devices are just 2 radios now as I cannot add tracks on the fly.

I hope they fix it soon because as is the app totally sucks. It's pretty much unusable.

I have emailed the CEO twice over the last 7 days with no response.