Could someone tell me how to hear sound from this MP4 file?

[ALUOp]

My friend used a TV card (AverMedia) and recorded this SDTV clip.
He can hear the sound but I cannot.
I have ffdshow installed and can see the video from Media Player Classic.
I have already tried uninstalling ffdshow and installing 3ivx but still no sound.
VLC doesn't even play it correctly. There is no sound and the video is jerky.

A weird thing is that while the file is supposed to have AAC audio as its video is H.264, MediaInfo shows that it is AAC but Gspot says it is AC3.
I tried using Yamb with MP4Box to extract the audio information, but still the audio track could be extracted.
Could someone help me find a correct codec for it or tell me which tool is able to extract the audio track from it?
TIA.

http://www.badongo.com/vid/577581/1

[aedipuss]

look like a bad encode to me. have him try again.

[Midzuki]

Bad muxing. I had to use Avi-Mux GUI to extract the ac3 track.
Neither MPC nor Avisynth could detect the audio part.
YAMB incorrectly identified it as an aac stream and
generated garbage as output.

clip.ac3

[ALUOp]

Thanks for the reply, guys.
It is indeed AC3 inside the .mp4 。
The stupid recording software put an ac3 within an mp4.