Frankly the Spotify player is very limited if compared to MusicBee's Playlist. But I might not always want to download the music I can get streamed from Spotify (yes I am willing to pay for premium music service). So there is real value for either MusicBee to get integrated with Spotify or they look into acquiring MusicBee :-). Functionality would allow us to:
1. Use MusicBee's Listing, Rating, Searching, AutoDJ, tagging, etc... over not only my downloaded base of music but also Spotify's database.
2. Export our MusicBee playlists back to spotify (for playing in the car for example).
If the cost for the developer to get premium service is the only hassle can't Musicbee users interested in this feature contribute for a few months of premium service so that the feature gets implemented?