All Media Guide (commonly known as AMG), is the company which owns and maintains All Music Guide, All Game Guide and All Movie Guide. AMG was founded in 1990 by popular-culture archivist Michael Erlewine.
The company was founded in Big Rapids, Michigan in 1991, in order to create a comprehensive archive of all music. AMG moved to Ann Arbor, Michigan in 1999. AMG was a business unit within Alliance Entertainment Corporation until early 2005. Yucaipa Companies, a multi-billion dollar fund based in California, retains ownership of AMG. Macrovision announced on November 6 2007 that it has agreed to purchase All Media Guide.
AMG has created a large database of metadata about movies, video games, audio books, and music releases. These databases are used for point of sale systems in tens of thousands of stores globally, for CD and DVD recognition in software media players such as Windows Media Player, SimpleCenter and Musicmatch Jukebox, and for providing content for a variety of websites.
In addition to selling computerized access to its databases, AMG sells several dozen print compilations of its information.
The current president is Karl Ryser, Jr.
