audio tracks in unreal echalon release

[Doodoo]

I am having trouble changing the audio
tracks in the Echelon release of Unreal
Tournament. I have cdi-ripped the cdi that
I have, and tried to extract the iso in it,
and it has problems extracting it. I have
tried all that I could think of. Does
anybody know of a way to add your own audio
tracks to the Echelon release of Unreal
Tournament??