[PROBLEM] Is webp supported for artwork?

[jcucurull]

Have a look at /var/www/coverart.php. Webp is not one of the supported mime types.

Why not just use jpg or png?

Yes, you are right, it is not supported.

Why not support it?   

Other players I use support it (Foobar 2000 and Poweramp) and it is a format more and more used. I can work around it converting the images and re-embedding them of course in the few cases I had the cover in this format.