bug in recompressing audio

[G-nome001]

Hi,
I've got a divx with an audio track coded in ogg vobis and I want to recompress it in mp3.I used VirtualDub 1.5.1, I configured the audio codec in mp3 with the same bitrate than the original, and run the encoding in "full processing mode".The encoding starts but at 15% of it the program bugs!It is still runnig but it doesn't encode! The number of reencoded frames stay fix and the "estimated time" grows up.
How can this be possible?
How can I solve this problem?
Did I misconfigured something?
Thx all for your help.
See u
G-nome

[pacohaas]

first try extracting the audio to a separate file and make sure you got the whole audio track there, then try to convert it using BeSweet. Check doom9's guides if you need help along the way.