The import function can be used for import recording from your USB storage device to your PC (uTool library)
Transfer Stereo, Multitrack songs and playlist from your PC to the USB storage device you need to use the Export function.
The uTrack24 does not support stereo file with midi file, but there’s a workaround for this situation.
You can can split the stereo file to two mono wav files with any audio editor (eg: Audacity)
Open the uTool, go to the export tab, click on the Multitrack song / add new song.
Browse the folder where this two mono wav file located, assign this two track to any of the uTrack24 outputs, then select and add the midi file to the song, save the song.
Now you can export the song to your USB storage device.