Your answer is Hoster cannot play .BIN files (or .CDG) if they are on the HD Drive and not converted to KMA files. You are the first in 6 years to request this, so I don't think we did wrong in not adding this capability.
I don't understand. If you have spent the time to create your .BIN files from KHPro and Vogone, why not import/convert them to KMA files stored in your Songs Database?
Another option would be to use Microstudio 3.0 to write your .BIN files to a CDG karaoke disc. Then, you can use Hoster's Add Track "CDG" button to play the songs from the disc. Otherwise, you must import them as KMA files.