Hi! I found my solution to having several Sonos devices still on the S1 controller and needing a smbv1 Nas device to share my music library. Finding a current router based nas or a current nas with out of the box support for smbv1 seemed fruitless short of spending more than I wanted, so the low cost alternative was to build one myself using a raspberry pi 4 with a USB attached drive and running open media vault, which allows setting smb to v1. Definitely not secure to put accessible from the internet, but secure enough for my home network.
Streaming from it to my sonos devices is back!