AFAIK you need to subscribe to see the library....can't say I've ever seen a shortcut. Some claims out there as to library extent, but they don't seem to be particularly consistent. Personally I use Spotify; when I trialed both Tidal and Qobuz a couple years ago I found I had on Spotify stuff neither of the other two had, but they all gain/lose selections over time, too. MQA is a joke fwiw. I'd tend to bet Amazon may have the largest library without any research, tho. Good luck!