So it can't be done with the remote?

Yes, it can be done with the remote.

There are several search options available with the remote (Search by PIN, search by title, search by Genre, etc.) including one that says "Insert by title". Use that search method (once you set it the first time, it will stay that way by default until you change it to something else) and when you have the song you want highlighted (it doesn't highlight, actually, it just displays in the middle of the screen in a larger font) then press-and-hold the Menu/OK button on the remote and that song will be inserted as the next song in the currently running playlist.

tanstaafl.