По ссылке на страницу от BALU - вот правильные URL:

http://www.velocedge.com/realmedia/airplanes/mig17a.rm
http://www.velocedge.com/realmedia/airplanes/mig17b.rm
http://www.velocedge.com/realmedia/airplanes/mig17c.rm
http://www.velocedge.com/realmedia/airplanes/mig17d.rm
http://www.velocedge.com/realmedia/airplanes/mig17e.rm
http://www.velocedge.com/realmedia/airplanes/mig17f.rm
http://www.velocedge.com/realmedia/airplanes/mig17g.rm
http://www.velocedge.com/realmedia/airplanes/mig1.rm
http://www.velocedge.com/realmedia/airplanes/miga.rm
http://www.velocedge.com/realmedia/airplanes/sukhoi1.rm