elmonty, thank you, you are right, there was a bug in this area.
It is fixed in the next build. You can check over in beta testing section later.

Let's say I want to burn all of the tracks in an album to an audio CD. If I highlight all of the tracks in the MM library, the total time is 45:04.

Now I select Burn CD/DVD. The item "Pre-selected tracks" is selected and the total time shown at the bottom of the dialog box is 45:04.

If I unselect "Pre-selected tracks" the total time at the bottom of the dialog box is now 0:00.

If I then browse to the Artists node and select that same album, the total time at the bottom of the dialog box is 2:15:04. If I hover the mouse over the album name within the dialog box, it shows 45:04.

If I unselect the album, the total time at the bottom of the dialog box returns to 0:00. If I reselect the album, the total time at the bottom of the dialog box becomes 1:30:09.

Just what is going on here?