I have a VBR file that MAD does not detect the time of properly in the file info box. The file is 23.9 MB, and is about 44 minutes long. However, in the file info box, MAD displays the time as around 20 minutes long. I scanned the file with MP3Utility, and the file seems to be in good condition (i.e., not corrupted). The correct time is displayed in the playlist though.