Dark Bar

[naiphan]

I am using window xp and recorded my karaoke music very successfully. But when I play in the karakoke machine it very strange in the machine. some of the music track was okey while some have dark bar about half inch from the top of the screen. Another one is the lyrics is on the bottom of the screen and with a dark bar cover the picture on the bottom.

I need help to fix this problems. Is there anyone experiencing this problems at all?