Amazon Music HD is fine but it will not play on the Air.

Reasons for streaming Spotify:

- listen to any music anywhere
- find new music easily for you and loved ones
- share songs and playlists
- create playlists
- supported by many devices
- no need for additional boxes that need space, create clutter and gather dust

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated