The audio cover art is not displaying properly as only part of the cover art is visible in the playing window. It needs to be resized (to a smaller image).
The issue happens on PC(Microsoft Edge), Kindle (Silk browser) and IPad (Safari).
PS I am using HD and size of 600x600 in case that causes any issue.
see Forum/User experiences http://forum.serviio.org/viewtopic.php?f=6&t=24436