Thank you so much @sapristi, your solution solved my issue! I must admit my own Linux ignorance kept me from figuring that out on my own, but your help was exactly what I needed. I can now play music and snapcast works as well, I have a Pi Zero W with snapclient that receives and plays music. It seems to be working wel.
@kingosticks I sort of followed these guides and also some other advice from your responses on the forum and the oficial Mopidy documentation as well. I kind of hodge-podged it all together. One thing that I think helped me to be able to scan the files was to change the Daemon user to root from your recommendation here: How to change Deamon User to root
I’m guessing that’s how i was able to scan the files but not able to play them? I would assume that now that I have set the Mopidy user to the Pi user group, I can probably go back and change the Daemon user back to Mopidy, but I dont know if I should do that or just leave it alone as it is working now.
Thanks again @sapristi, @jjok, and @kingosticks for helping me to figure this out. It has been a learning experience and I appreciate your expertise and assistance.