Hi,it's me again.I finally got around it and edited my sounds.dat and it works without a problem.(meaning the sound doesn't get funny like other mods I have seen)
I managed to change the pitch to make it sound weird,and even managed to translate Abe's "Hello","Follow me","All of ya"and "Sorry"in russian,and I got them to work.Here's my sound.dat file if anyone wants to try,I made it using Audacity for the pitch,PSound for Abe's russian voices and Sony Vegas to insert Abe's russian voices in the file.
Here's the link to get the sound.dat file I made.
http://www.fileshare.ro/e30092601