We already support the MPK Mini and MPK Mini MK2, so why not the Play?

Akai Editor stores the patches in a non-SysEx way, but does send them to the device as SysEx (very similar to the others). The editor uses the Midi name to locate the device, and that can be faked with midiLoop (*).

F0 47 7F 44 64 00 63 01 00 00 04 00 00 00 00 00 00 03 00 78 00 00 00 00 01 10 00 10 11 12 13 14
15 16 1F 20 21 22 23 24 25 26 27 30 00 7F 31 00 7F 32 00 7F 33 00 7F 40 00 7F 41 00 7F 42 00 7F
43 00 7F 0C 00 00 43 00 23 00 00 38 40 40 F7

• http://www.tobias-erichsen.de/software/loopmidi.html