Help Needed - No sound after mods installed

I recently downloaded 2 mods for GTR Evolution

this
http://www.racedepartment.com/downl...rsche-mobil-1-supercup-for-gtr-evo-v2-5-2360/

& this

http://www.racedepartment.com/downloads/gtr-evolution-cars-5/porsche-997rsr-ferrari-f430-2994/

but there isn't any sound, where should I put the sound file? (offline version)

Cause I think I clearly did something wrong