External play midi signal?

Hello everyone,

I’ve got some questions before buying:

-Actually I use my SPD-SX to start playing song on Ableton. I assigned a note to the “play” button and hit it at the beginning of songs. Is it possible to assign a note to “play” in LP16?

Other question:

-When you hit the physical “play” button on the LP16, is there any delay before the audio start playing? Or is it quite immediate?

Best regards