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You can find a listing of the songs played during the television broadcast (NBC Rewind & DVD versions may differ), including scene descriptions, here: http://www.tvshowmusic.com/shows/fridaynightlights.html

If you are looking for one of the songs that have been changed for the NBC Rewind/DVD versions, try starting at: http://rescuerecords.net, as they seem to be the main source for the replacement music.