That did it! Thank you. (I thought a blank in that field on all the songs would count, but clearly not). Thanks, again.

Make sure all files have the same Album Artist value in MediaMonkey so MediaMonkey sees it as a single Album. Then Sync should work.

I've created a "mixtape" album of 7 songs on my computer. I use MM edit to make sure all songs are the same "album", same bitrate, pretty much same everything except title, artist and path. When I drag and drop the seven songs together from my computer to the iPhone, they show up in the iPhone Music app as seven different albums, all with the same name, each one containing a single song. Am I missing something?