Novice help request for playing a track on Sonos

[scottgu3]

Playing tracks through the Sonos integration on demand, is kind of a pain. I have managed to use a Rule to start playing a Pandora Radio Station on my Play:3 at night, by using the suggestion by @mike.maxwell in the link below (not exactly a specific track...):

Sonos - Play Pandora Radio Station, etc?

So, trying to figure out how to have a Sonos device play specific radio stations from Pandora, or a Amazon playlist, etc. I've tried putting " Radio" as I would invoke it through Alexa (its an alexa enabled sonos), no love Is there anywhere I can find the commands available (either via driver interface or WebCoRE) and examples? -j

There are also some clues in this thread that might help:

Sonos stream and playlist playback

Hi, (Apologies if this is not the appropriate category for this post/question.) I am building actions to trigger my Sonos and want to share what has worked for playback of streams. The development workflow goes roughly: Pick a Sonos speaker to work with and an appropriate app (iOS, Android etc) Press "Clear Queue" Select the desired stream to play and start it. Flip to the Hubitat device for the chosen Sonos speaker and examine the "Current States" on the RHS. Copy the "trackData" and paste …

I haven't dug around enough, but based on all the threads on this subject, it seems like there should be a HOWTO: around here someplace...

S