Fix track length on import

app/utilities.py

@@ -94,12 +94,10 @@ def create_track_from_file(session, path, normalise=None, interactive=False):
     track = Tracks.get_or_create(session, path)
     track.title = title
     track.artist = artist
-    track.duration = int(round(
-        t['duration'], Config.MILLISECOND_SIGFIGS) * 1000)
-
     if interactive:
         INFO("Parse for start, fade and silence...")
     audio = get_audio_segment(path)
+    track.duration = len(audio)
     track.start_gap = leading_silence(audio)
     track.fade_at = round(fade_point(audio) / 1000,
                           Config.MILLISECOND_SIGFIGS) * 1000