xine-lib  1.2.9
About: xine is a free multimedia player. It plays back CDs, DVDs, and VCDs. It also decodes multimedia files like AVI, MOV, WMV, and MP3 from local disk drives, and displays multimedia streamed over the Internet.
  Fossies Dox: xine-lib-1.2.9.tar.xz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

xine-lib Documentation
Various specifications specify files and file formats. The XDG Base Directory specification defines where these files should be looked for by defining one or more base directories relative to which files should be located.

This library implements functions to list the directories according to the specification and provides a few higher-level functions for use with the specification.