Silent hill 3 cd to dvd

[Manu23]

hi im trying to put silent hill 3 to dvd
on cd4 there is a file called sound_3.cab and on cd5 theres a file with that exact filename
so i opened them up and extracted then both to a temp directory then i rezipped then and changed the extension back to cab
when i burn and run install it works until it gets to sound_3.cab and it says cannot find source
is there a cab editor that can put both cab files data into another one?
or sould i overwrite the cd 4 cab with the cd5 (different files inside the cab but cd5 was 170mb and cd4 was 60mb