Yes, you're quite right about the need for editing; I've only used the "lite" application that comes with Print Music, so I don't know if the optional, more expensive version works any better. Since I'm not a keyboard player, I'm not fast at inputting the data, so even with editing the scans, they've worked for me.

You're also right about the problems inherent in using flatbed scanners: I've only used letter-sized sheet music and the utility on my Epson scanner allows me to crop the preview image to the correct size before doing the final scan.

In any case, there probably aren't easy solutions that most of us can afford.

Good luck with your MIDI files.

--Donna