Spotify used to have a 10,000 song limit when it came to saving/adding songs to "Your Library." Now, the music streaming service has finally gotten rid of this limit, so it's time to like all the songs and albums you want. However, there are still limits to other Spotify features. There's still a 10,000 song limit to the number of tracks you can add to playlists, and, for Premium users, the same limitation exists for the number of offline tracks you can save (divided among five different devices). This new limit is rolling out to all users now.
Source: Spotify