I had the same issue with the Vault2 many years ago, when it was slightly out of warranty. I had backed up the files to a Synology NAS, which I subsequently backed up to my Melco N 100. The Synology also failed soon after I had completed that backup. I backed up the Melco but it has worked flawlessly.
My only complaint about the Melco was as a player I wasn’t crazy about the app, which is basically mConnect. I subsequently added a Cambridge Audio CXN 60 which added AirPlay, Chromecast, and Internet/Radio and Podcasts. All sources feed a Bryston DAC3 and I have been very happy for several years. mConnect has since updated the functionality of its app but I have just stuck with the CA.
Bluesound products are poorly made, imo. I always recommend people new to streaming start with Wiim products as players and if they want to stream a library of ripped albums pick a NAS that will work with any player. I am biased towards Melco as a NAS but recently attached a back up HD from 10 years ago by USB to my Cambridge and it played flawlessly using the Stream Magic app.
In this case the OP isn’t new to streaming so I’d skip the Wiim but again pick a NAS that is independent of the streamer

