If using a new card, the best way is to format the SD card on the 7000, and save a file on the keyboard. On the computer, drag and drop the midis you want into the Sound (midi) Folder.

Bernie is correct. SD Explorer is for the default save Technic File

The midis if recorded on the PSR-8000 will probably need tweaking as all keyboards interpret sounds differently in the file.

Good luck

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Larry
SynthZone Frapper
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Larry "Hawk"

♫ 🎹🎹 ♫ SX-900