I have legacy units at my home - four Play5s, two Connect Amps, and two Connects. They all sound good and find no reason to replace them. And yes, I obviously use the S1 app.
For over a year now, only my two Connects are able to play music from my library. I use a Synology NAS. The only way my other units get to play music from my library is when I group them with any Connect. Otherwise attempting to play my library directly through the Play5s or Amp would only show that access to the NAS is denied even though I've made sure SMB 1 to 3 are enabled in my NAS.
Can anyone tell me why library access is allowed only for the Connect units? Have I missed checking anything else here?
By the way, there is no problem with streaming any music service. But I built my system for my vast music collection.