Cover Art/Types
front
The front of the packaging of an audio recording (or in the case of a digital release the image associated with it in a digital media store). (link to http://en.wikipedia.org/wiki/Album_cover ?)
back
The back of the package of an audio recording, this will often contain the track listing, barcode and copyright information.
booklet
A small book or group of pages inserted into the compact disc or DVD jewel case or the equivalent packaging for vinyl records and cassettes. Digital releases sometimes include a booklet in a digital file (usually PDF). Booklets often contains liner notes, song lyrics and/or photographs of the artist or band.
(link to http://en.wikipedia.org/wiki/Liner_notes ?)
sleeve
The sleeve is the outer covering of a vinyl recording or compact disc, it is the paper covering closest in contact to the surface of the disc.
medium
The medium contains the audio recording, for a compact disc release it is the compact disc itself, similarly for a vinyl release it is the vinyl disc itself, etc..
obi
An obi is a strip of paper around the spine (or occasionally one of the other edges of the packaging).
spine
A spine is the edge of the package of an audio recording, it is often the only part visible when recordings are stacked or stored in a shelf. For compact discs the spine is usually part of the back cover scan, and should not be uploaded separately.
inner
Use "inner" for the insides of a release if the packaging folds open (e.g. Digipak or some Double LP releases). Some compact disc releases use a transparent disc tray, use the "inner" type for scans of the image behind the tray.
track
Digital releases sometimes have cover art associated with each individual track of a release (typically embedded in the .mp3 files), use this type for images associated with individual tracks.
=box
Use "box" for pictures of an entire box set, usually these pictures include the outer packaging and the jewel boxes or other contents of the box. For example: http://www.discogs.com/viewimages?release=2943543
other
Anything which doesn't fit in the types defined above.
