Free Media Player Specifications
These specifications are designed to provide standard and complete ways to perform common tasks with media (especially music) metadata that may otherwise be very difficult. They aim to be as simple as possible while still being robust and useful, and to be consistent across metadata formats.
Discussion of this specification should occur on the xdg mailing list. Some historical discussion can be found on the FMPS Google Group (some new content is also copied there from the XDG maailing list).
The Git location of this specification is currently at http://gitorious.org/xdg-specs/xdg-specs/trees/master/specifications/FMPSpecs.