am bf47092e: Merge "Fix track duration calculation if the start timestamp is non-zero" into gingerbread

Merge commit 'bf47092e1e76224474745b6919febd3aa9df5bcf' into gingerbread-plus-aosp

* commit 'bf47092e1e76224474745b6919febd3aa9df5bcf':
  Fix track duration calculation if the start timestamp is non-zero