My discs load but wonWon't download

[Bi-Polar Bear]

downloaded them from the original cdg's sent them to my KMA folder... using hoster to play them. No deviation from what I've been doing the whole time. If I go to my computer and click on the external hard drive and open my kma folder they are there. I can go to the search function in hoster and they come right up. I push add track.... and up they come. press play.... and dark screen. no audio, no video.