Bug 273407

Version:           2.4.1 (using KDE 4.6.2) 
OS:                Linux

I detected actually two issues regarding to total lenth computing, but they seem to be related, so I'm going to list both of them:

* Total length of a group and the whole playlist is shown wrong both in the status bar and in the playlist header. It is always computed modulo 24 hours, so the days count is omitted. According to https://bugs.kde.org/show_bug.cgi?id=267380 , I propose the format [day] h:min:sec.

* The total length in the status bar is not updated correctly. When adding a track to the playlist, it seems to work fine, but not when removing a track or use undo/redo or remove a track automatically in the dynamic mode.

Reproducible: Always

Steps to Reproduce:
- clear the playlist
- select a playlist view with grouping (by album e.g.), where the the group length is shown in the header
- put either a very long album in the playlist, or one album several times
-> notice that the total group length as well as the total length in the status bar is shown modulo 24 hours

- remove one track from the playlist
-> notice that the total length in the status bar is not updated
- remove another track
-> now the status bar is updated, but shows the old value
- play with undo/redo
-> sometimes updated correctly, sometimes not

Actual Results:  
wrong values :(

Expected Results:  
right values :)