... it made reference on the pen drive to the need for .smf files as I remember.
Hi Miguel,
I believe that
the BK-9 expects Standard MIDI Files to have the file extension .mid and to be of Standard MIDI File type 0 or 1. (So it will not understand MIDI type 2 files.)
An explanation:
Looking at page 44 ofthe BK-9 manual to which Mark linked, I think I can see how the manual and the keyboard can confuse.
On the extract that Mark showed from p44 of the BK-9 manual, it shows that the keyboard will import files with various extensions and the bit labelled "Standard MIDI Files (SMF)" shows files with extension .mid, or Karaoke files with a file extension .kar.
On the same page in the table to the right, the manual shows what icons appear on the display alongside the name of each file, to identify the
type of file.
But the keyboard still expects the file to have a
suffix of .mid
Above that second table is an image of the BK-9 display, with some example lines, one of which is: