Currently, there is no download capabilities for albums. So, what works, is to create for each and every album a new playlist. Now, those playlists appear on my wife's iphone. Sorry, that I do mess with her space. So, how can that be set up ?
A Spotify account is only intended for individual personal use. The reason for this is that one subscription is not meant to be paying for the music consumption of a number of people. This would dilute the revenues for recording artists and composers, and it is why our license does not cover it.
Spotify can be installed on any number of devices. There is no limit. There is only a limit on the number of devices which can have offline synced playlists at any one time. Offline syncing shouldn't be used to share a subscription. I hope that we can provide a discounted family package at some time in the near future.