Is the Sonos Library limit still approx. 65k?
The limit is a combination of the number of tracks and the amount of store taken up by all the track info combined. So if you just have popular music, you might get away with 65k tracks. If you include classical, which often has much longer track names and titles, your limit might be much lower. I can only get about 38k tracks on my system before Sonos fails.
Is there any easy way of double checking this to make sure e.g. a diagnostic.
There was, but Sonos removed it - they claimed that it was a security risk. So you have to submit a diagnostic and then ask Sonos support - and half the time they get it wrong. If you’re lucky, they’ll have improved since I last bothered.
I suppose I will have to move towards PLEX. If so it is a pity I can’t trial it first before committing as it is a big outlay for a life subscription which I figure I will need.
I tried out Plex under Sonos, but I don’t remember paying anything for it. The Sonos version was too basic unless you have a very simple library, but it did work. The standard version of Plex, working from a browser, looked more sophisticated, but it didn’t gel with me.
At the moment I switch out my least used albums to stay under the limits, but if I want to use the whole set then I cast it from my NAS via HifiCast to a Chromecast audio plugged in to one of the Play 5s, or to my receiver which has Chromecast built in. Other alternatives exist ;-)