I have a hyundai hdt premier-99 karaoke player. I need the MIDI-CD. Where can I purchase tis product?

SOURCE: CAVS DVD 105G having trouble reading super CD-G disc

I also have a cavs player with a tray that sometimes will not open....and I have been playing with it now for a couple weeks....it looks like I might have the thing working after using small drops of baby oil to lubricate the mechanism.....so,take the cover off, if you push on the cassette drawer when you ask it to open, it should open....then you can apply a bit of the baby oil to the workings inside.....also, shut down the power when it is halfway open, makes access to the works much easier ....worth a try....I asked the same question on the cavs site, got no answer