Web Playback SDK in future / official Linux Client

[linux4u]

Hi

We are looking for a sustainable solution to integrate Spotify in our media center. For this we need a Linux client. Unfortunately I haven't found it until today. The player now works fine via the Web Playback SDK. But the SDK is still beta and the following note is deposited;
"This SDK must not be used in commercial projects without Spotify's prior written approval"

I ask for the following clarifications:

=> Can we use this Web Playback SDK in our media center?

=> What does the future of the Web Playback SDK look like?

=> Is there any other official player that we can use on Linux

Thank you so much!