Import Video problem


Cubase LE5 for Tascam 1800 interface.
Windows 7

I am trying to import an MP4 video.
According to the tutorial, there is supposed to be a box I can check to extract the audio separately, but the box doesn’t appear.

I can import the video but there is no sound.

I can view the video in with the Quicktime box that appears.
There is no separate audio track.
If I can’t here the sound, I can’t edit the video.

What am I doing wrong here?
Or is this not a feature of LE 5


Bob S