getting audio files out of an iso

[j3984]

ubuntu 14.04
Brasero will only let me make an iso image file. If its cut from mp3 files...how can I use ubuntu to get out of it only the audio files??

[1fallen]

This is just a suggestion, if you don't find a better answer. ;)
xfburn>>CD and DVD burning application. http://goodies.xfce.org/projects/applications/xfburn
Light weight, simple and straight forward to use.
I have not used Brasero for many years now.
Regards