CD burner issue

[slsides]

this isn't a hoster-specific problem, but i thought you folks might have some insight into it anyway.

the burner is a plextor px-230a

it will burn discs, and they always seem to work fine except for one thing: they won't play in a karaoke machine. data and audio discs work fine. karaoke discs work fine with hoster and microstudio. if i take them to a karaoke machine, the discs either won't load or the audio will play but no graphics will display.

the machine has a sempron 3200 cpu, 2gb ram, radeon 7200 display adapter. the drive is internal atapi, with winxp pro.

i was able to make discs with this machine fine, but at some point in the not-too-distant past i started having this problem.

any analysis welcome.

shaun