Display question with title.displayFormat

[dvdr]

Hi

I am trying to use the displayFormat option to display track titles as follows:
D1 T1 track title
I got as far as "D1 1 track title" by using
title.displayFormat={$discnumber$tracknumber$title^D^^ }
but am not succeeding to insert T for Tracknumber.

Before that, I worked with
title.displayFormat={$discnumber$tracknumber$title^^^ - }

This one works in displaying "disc number - track number - track title"
with one strange problem:
whenever discnumber and tracknumber are the same, tracknumber is left out.
So I get
1 - track title for disc1 track1
1 - 2 - track title for disc1 track 2
2 - 1 - track title for disc2 track 1
2 - track title for disc2 track 2

I had added the tags "discnumber" and "tracknumber" to the list of indexed tags to make this work.

Btw.: another observation: adding "Title" to "alphagroup" does not alphagroup track titles. I have to introduce all=100 to actually alpha group track titles. Is "Title" the wrong tag to be used/indexed?