Hi newbert,

I've occasionally had the same thing happen with certain mp4 files, not sure the why and reason for it, as others work.

My workaround is to use Audacity.exe to open the mp4 file and then use the File-Export command in Audacity to export and save as an mp3 file.

Take a look at this link to the Audacity FAQ on the subject, its short and sweet.

http://audacity.sourceforge.net/help/faq_i18n?s=files&i=wma-proprietary


--Mac