cannot seek while playing waveforms

[Bryan Paddock]

While playing .wav file in Clementine on natty I cannot seek through the track as it hasn't detected the track length.

This is the same for .wav files stored locally and .wav from audio cds.

Steps to reproduce:
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1. Open clementine
2. Click files on left sidebar
3. Locate .wav file and add it to the playlist.
4. Play

Expected Result:
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Track length is detected and slider is enabled allowing seeking

Actual result:
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Track length is 0:00 and slider is disabled

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Clemetine v0.7.1 on up-to-date 64bit natty.