VorbisComment

The basic document describes LICENSE and COPYRIGHT fields, but is perhaps not clear enough about whether these should be machine-readable:

• http://xiph.org/vorbis/doc/v-comment.html

Some proposals for extra field names:

• http://reactor-core.org/ogg-tagging.html
• http://www.gophernet.org/articles/vorbiscomment/

The recommendation at Creative Commons -- we should probably work together to have complementary and interlinked information on the CC and Xiph wikis:

• http://wiki.creativecommons.org/Ogg