[DaveBlake]

@"marcelveldt" or @Angelinas perhaps, can you tell me how SHS handles disc art for multiple disc albums? Say CD1 and CD2 have different (round) CD images, how are these named? How does the skin reference them?

It depends... if the discs have their own sub folder (eg disc1) the correct discart is displayed, otherwise the discart situated in the album folder 

Hi @"marcelveldt" I wasn't doubting that it did it, but more interested in tech details. 

I'm looking at core Kodi picking up a range of types of local music art files automatically as part of scanning/scraping.

I very recently sorted out how files called folder.jpg (or anything matching the values given in <musicthumbs> tag in advanced settings.xml) in a disc set subfolder is handled. The names of the subfolders don't matter, only that the music files within them are tagged with a common disc number. The subfolder folder.jpg files are added as album art, and named "thumb1", "thumb2" etc., "thumb" comes from the folder.jpg  within the parent  the album folder.

Of course most people are not interested in disc cover art - some boxed sets have it, most don't, not even sure it is available online. It is (round) CD images that are more common and popular, so I am expanding to include those or anything else (as yet not dreamed of).

My idea is to generalise approach taken with tumbs so that any art in a disc subfolder (limited to a whitelist held in advanced settings.xml) will be added as album art, and art type coming from the name of the file (minus ext). For example, having added "discart" to the whitelist then files in the subfolder called discart.jpg or discart.png would get added as album art "discart1", "discart2" etc., format = <type><discnumber>. Skins would then access this via ListItem.Art(discart1) for album items, or for song items ListItem.Art(album.discart1).

How does that seem? How does it compare with what SHS already does?
Probably mean that SHS can do less in future too