The Mrs. of all people came across this the other day, its a downloadable audio tour of the battle of Naseby narrated by Robert Hardy. The idea is that you download it to your MP3 player and then listen to it at the appropriate spots as you wander round the site. Of course it's still a pretty good listen if you can't actually make it to the battlefield.
http://www.naseby.com/thelandscape/visi ... otour.html

