About the audio player, it will get added, but not in v0.9 unfortunately. Generally speaking, I tend to agree with swamphox and one should avoid audio in 2015. Idealistically as a website author, it would be great to accompany the visual experience with hand-picked audio. Realistically, it is unlikely that more than a fraction of the visitors would benefit from the audio, while it would be a functional and technical annoyance for all others. It could be generally beneficial in a few niche scenarios, but I would strongly recommend a passive approach where the visitor gets full control of when to start/play the music.
I followed this thread and the development of X3 quite a while now and would like to test the new gallery by myself. Do I still have to write a pm to karl for a download link or will the upcoming version be available in the download area (when logged in of course)!
X3 is amazing so far! Can't wait for the release candidate!
Plz wait for pending v0.9 release, I will make it available for you!