Multiroom airplay through airfoil with smartthings, home kit, android wear, logitech harmony and Alex control - is this integration?

Ugh-I couldn’t get alexa to discover anything in the HA bridge (I experimented ith items even knowing they didn’t work.)
google tells me that this is a common problem.

Add them to Smartthings first then Alexa will find them

Ah gotcha! Thx!

And how do I do that? The hue device type does not find them.

Well, here’s the thing, I just had loads of trouble trying to start from fresh myself…
So I deleted all my speakers from Smartthings, deleted all the ‘external’ hue smart apps, the couldn’t add anything again…
So I went to HA bridge, changed the version of hue emulator to 1941132070
Saved, then used Smartthings classic app to find my ha bridge (press link on ha bridge, then add things in Smartthings classic), it found my bridge, then it kicked me out to the new app, luckily it added the bridge first so all my speakers were now in Smartthings and alexa sent me all the lovely notifications to say it had found my speakers…
I noticed that I could add the ha bridge to hue app once I’d changed the emulator number, maybe do that first to check you’re set up is correct…all your speakers will be in 1 ‘room’, I’m sorry my help has been a bit hit and miss (mostly miss) but this is something I cobbled together using other people’s parts and most of them have discontinued support, I understand your frustrations as it took me about 18 months to figure out how to add the speakers to ha bridge with volume control

Make sure your ha bridge is running again after changing number, I had to start it again manually