Send Spotify playlists to work Sonos?

Hi,

I work in an electrical retailer, and I have a Spotify Premium account which I use at home and on the move. Essentially I would like to build a HUGE playlist full of various different songs from different genres and years so they can be playing in the background in the shop all day on our Sonos Display area.

At work, we only use the Sonos Controller and we can't install Spotify on our tills.

So, my question is how would I going about sending this playlist to my works Spotify account? Also I can't do it via facebook as the company doesn't have a profile (yet!)

Also while i'm here is there a song limit for the playlists?

Finally, since different songs are recorded and mastered at different volumes, does the Sonos have a volume limiter or volume equilization?

Cheers