Reading through your posts, I think there is some confusion in your mind about the various file formats used in the KN7000. I realise that you are probably a relatively new owner of your KN7000 and some explanation may help............
An external KN7000 format Style file loads either from Floppy Disk or SD Card, into the COMPOSER section of the Auto-Accompaniment system and comprises one or more Variations of a repetative loop - similar to any of the Built-In Styles in the RHYTHM GROUP. There are usually 4 Variations within a Style and each Variation can be up to 16 measures in length. The thing to note is that when a selected Variation is played, it just keeps going round in an endless Loop until another Variation is selected or the style is stopped. In itself, a Style is usually generic rather than specific - in other words, it can be used as an accompaniment to several different songs or tunes. You can regard most of the Built-In KN7000 styles as generic. However, Styles can be built to fit specific songs or tunes. External Style Files can also be loaded up to 20 at a time into the CUSTOM MEMORY of the KN7000. Put briefly, a Style File is purely a means of providing an Auto-Accompaniment..........
A MIDI File is totally different to a Style - it is generally a complete multi-track SEQUENCE of a specific song or tune - not an Accompaniment Loop. This being the case, you cannot regard a MIDI file as a replacement for a Style - it is basically a complete recording of a song or tune, which may or may not include the actual Melody line. However, you can if you wish, locate which track of the MIDI file contains the Melody line, mute the track and then play along with it.
As far as converting a MIDI File to a Style is concerned, there is no direct way of achieving this and as far as I am aware, such a conversion program does not exist. Having said that, it is possible within the KN7000's operating system, to extract some of the data from a MIDI File and build a Style from some of the tracks of the MIDI File. However, it is quite a long and fairly involved process to create just one complete Style from a MIDI and I'm sure you would not wish to do this for the '1000s' of MIDI files on your PC !
You have already been advised in a previous post in this thread, how to transfer multiple MIDI Files from your PC to an SD Card. This is the only way to carry out the transfer - just Copying and Pasting or Dragging and Dropping from a folder on your PC directly to an SD Card in a Reader/Writer, will not work.
Finally, you state "...I can save styles to computer and then save to a s.d card in very large batches instantly." Would you care to explain in more detail, exactly what you mean by this ?
After silence, that which comes nearest to expressing the inexpressible is Music.
( especially when the music is played on a KN7000....)