In order to streamline the Spotify integration and to make it easier to implement Spotify into devices, we've dedicated ourselves to Spotify Connect. Any Spotify Connect enabled device can and will be compatible with Spotify.
With Spotify Connect you use your mobile device as a remote to play music on any Spotify Connect enabled speaker or receiver. You can find more info about Spotify Connect here.
Should do the trick. Let us know if you have further questions. We'll be happy to help.
You can find all devices Spotify supports by heading here.
Further, if you haven't already, we'd suggest making sure to check this relevant idea and leaving your feedback and +VOTE there. Keep in mind that it also provides a workaround on how you can use Squeezebox.
If you'd like more information on how the Ideas Exchange works, make sure to head here.
Hope this helps :)
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