Tony, the keyboard will fit, but all the cases for it have an extra 5-6 inches for wheels and that is the difference. Grrrrr
My Ford Windstar seats 7 and all my gear fits behind the rear seat. That's part of the plan .... it has to fit.
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Zuki - the Karaoke files live on the hard drive will all the other MP3 and smf files - you simply select and hit play. If you need the lyrics - you push the lyrics button. they are the professional audio CD-g files that you hear in the clubs.
The transfer was easy on the Korg - the hard drive mounts to my Mac with a USB cable and then, you drag and drop either direction. It's pretty smooth. If you wanted to, you could make a USB stick transfer too.