Hi!
After I finish a song in FL Studio, I want to export the song's stems (drums stem, bass stem, piano stem),
PLUS:
I want to create my own 'rompler' in such a way:
I render to audio two octaves of a VST synth (I render each note to a separate wav file - each wav file will last 15 seconds). Then, I load all these wav files to a hardware device, so I can play these 2 octaves from this hardware device without the need of a computer.

I also want to play the 3 stems (drums, bass, piano) as my instrumental, while playing live on the 2-octave hardware 'rompler'.

Can you recommend hardware devices that can do all this?
(a simple workflow of the device is much appreciated)

Thanks!