Roughly 6 months ago I had a chat on IRC with some Spotify engineers about a pending replacement library for libspotify, which I understood is deprecated and no longer developed. Essentially it was said that work was being done on a small POSIX-style native library just for the audio playback portion of the Spotify playback, with the Web API intended to handle every other aspect. I got the impression that the intention was to make this library as small and portable as possible, hence it would work on most platforms, including desktop.
I have not heard any more of this, and I can not find any sources that detail plans to replace libspotify. Besides being fairly buggy, outdated and somewhat painful to use, the current issue I see with libspotify is that it uses a different method of authentication from the Web API, making it awkward to mix data and functionality between these two sources.
Could someone from Spotify please elaborate on whether or not this small native library is at all in development, and whether there are any plans to release it, or at least something that would fill the same role?