problem with kdenlive
 

goodmorning all

i hope this is posted in the correct place
i run linux mint 7 and want to create a dvd from a MP4 file and a flac audio file in kdenlive

now is my problem, if i add the flac file playing time 2h33m49s the file in the kdenlive project tree says the playing time is 10m00s and i can't change this.

how can i change this, is it a kdenlive bug or do i make an mistake somewhere.any help is welcome

dirk