Short, concise description of the idea
show exactly what a person is listening to at the time of you looking at thier journal.
Full description of the idea
have a scrolling text on the main lj page that shows what song you're listening to now. it could work with winamp or something to update when the page is refreshed.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation