Some thing I wud like to tel u
1st
Sound format in GTA III wud b .wav
(I've not played that game)
So it can b well compressed and filesize wud b reduced

But this wud not happed woth games which hav .mp3 files

2nd thing
if it is compressed by an archiver
then it will appear @ the time of extracting or decompressing
U shud hav noted that

3rd thing
If it is a game and compressed and it is a rip
also a DOS screen appears at the time of installin
for quite a while then its UHARC archive

It is the best archive known to b used in NON OS PC
means it can run 4m CD widout the need of OS @ boot time

Now it has a GUI
go here for more info
www.klaimsoft.com/winuha/