Here follows one program that help to create Karaokes, animes and others subtitling projects: Aegisub.

---> http://aegisub.cellosoft.com/

---> http://forums.animesuki.com/showthread.php?t=26958&highlight=aegisub ( for some references about the program, his bugs, features, etc)

---> http://forum.doom9.org/showthread.php?t=102361&highlight=aegisub ( for some references about the program, his bugs, features, etc)

Best Regards.