ffmpegX does not fully convert MP4 audio to MP3

[kelman4]

I've got an mp4 movie and I'm trying to extract the audio so I can use it as a 2nd audio track on a DVD I'm creating. When I do "movie audio to mp3" in ffmpegX it cuts off the conversion about 1/4 of the way through.

I get the "ding" sound just as if the conversion is complete but the file turns out to be only about 1/4 of the audio that's in the video. Should I use a program besides ffmpegX to extract the audio?

[kelman4]

I ended up using toast to export the mp4 to ogg audio then converted that to mp3