It's supposed to be an arranger keyboard we are talking about so it's all meaningless until we see someone playing it live so we can hear what the voices and styles are like.

The gimmicks of audio clips etc. do nothing for me.
When playing gigs, the audience wants to hear it all coming from us. they can play audio at home to their hearts content without needing a keyboard around.

I have never used audio or midi files except when I take my break and my audiences have always been happy enough to listen to me.
Tony