No audio from captured files on playback

Hi,
I've got a strange problem with video files that I've captured FCP 6.0.4.
While it captures the video and audio, as soon as I play the clip back whether it be in the preview or through timeline, no audio can be heard, though in the audio meter box it show's that it's there.
But if I bring in an audio clip, say I've captured through iMovie... no problems.
Any ideas.

I'll give that a try in the morning, and let you know how that goes.

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    Format                           : DV
    Duration                         : 8mn 52s
    Bit rate mode                    : Constant
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    Width                            : 720 pixels
    Height                           : 480 pixels
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    Bit rate                         : 1 536 Kbps
    Channel(s)                       : 2 channels
    Sampling rate                    : 48.0 KHz
    Bit depth                        : 16 bits
    Stream size                      : 0.00 Byte (0%)
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