Move loops between your computer and the stem player, as WAV or MP3.
Not connected
Use Chrome or Edge on a computer, with the SP-1 plugged in over USB and powered on
normally (not playing). Click Connect and pick the SP-1 Audio serial port. No button combo
or special mode is needed — the looper switches itself into transfer mode the moment you
select that port (it pauses and the four track lights blink together). Uploaded clips are
resampled to the device’s rate, mono; every track keeps its own length and loops
independently (the first clip in a song also sets its beat grid).
Device settings(hidden panel — you found #settings)