Comment 3 for bug 780021

I don't know what the cause of this bug is, but this one-liner fixes it. The problem is that it only fixes the duration if the track has been loaded. But the fundamental idea -- number of samples divided by samplerate -- is robust:

=== modified file 'mixxx/src/engine/enginebuffer.cpp'
--- mixxx/src/engine/enginebuffer.cpp 2011-07-28 20:21:01 +0000
+++ mixxx/src/engine/enginebuffer.cpp 2011-07-30 20:00:13 +0000
@@ -347,6 +347,9 @@
     m_pTrackSampleRate->set(iTrackSampleRate);
     slotControlSeek(0.);

+ //fix the duration
+ pTrack->setDuration(iTrackNumSamples / (2 * iTrackSampleRate));
+

     // Let the engine know that a track is loaded now.
     m_pTrackEndCOT->slotSet(0.0f); //XXX: Not sure if to use the COT or CO here

The question is if this is the right place for this hack, or if the scanner can do it instead.