Fran - you're gonna like this:

When you're playing song files you scroll to find the song, then push to select it. It won't start till you hit the play button, but after it does start ... you can scroll to the next selection and it will load after the current song is done playing. No second button push ... it will be waiting for you to hit play. OR - you can select auto play (like an ipod) and then the next selected song will play automatically!

YAY! Doesn't Yamaha song playback work like that too?