I Think the OP is actually asking how to extract or do something with an audio file that is inside the ps3 iso file... What I don't get is why the file is in ISO format in the first place, every file i have ummmmmmm grabbed
, they have all been local folders and files, already extracted.
If this is the case, everything would be done on PC. Just use a tool to extract iso [poweriso, even winrar works]
To extract the audio though, is kinda different for every game. Some are mp3's or playable codec for most players, some are in special ps3 files. aldostools has a great range of tools that could help.