I've also had a problem that is similar to that one. You know how you can insert another tune by the same artist into the queue by pressing the "2" button on the remote.

This works, no problem.

But when I want to do the same for songs with the same title (in this case the same "tainted love" example can apply), this doesn't work. I try to do this by pressing the "9" button, like it is printed on the remote, but it doesn't work.
Am I doing something wrong or hasn't this been implemented yet?