Lads,
Apologies if I am preaching to the converted.
I know a lot of bookies have archive race replays like Bet America and Racing2day.
But, NYRA do a nice weekly Stakes Racing Review show – The National Racing Report
http://vimeo.com/nyravideo
And Youtube does have some good free sources as well, some tracks put all their daily races archived on Youtube.
Del Mar Turf Club
http://www.youtube.com/user/delmarracetrack
Hollywood Park
http://www.youtube.com/user/Hollywoodracetrack
Keenland – Race Replays by Trackus
http://www.youtube.com/user/TrakusRacing
Louisiana Downs
http://www.youtube.com/user/louisianadowns
Turfway Park
http://www.youtube.com/user/turfwayparkvideos
Woodbine
http://www.youtube.com/user/WEGReplays