[Help, no audio for GTA Vice City (PC)]

to hear the sound u need to have a cd or the files of real gta vice city from a real cd or u can also use a crack file too. I have the problem when i turn on the sound i hear shoooooooooooooooo my friend he downloaded a crack file and added it into gta vice city folder and his sound works but that made his game slow.

[How to add cars in gta vc :?::?::?::?:]

can someone help me that how can i add cars like download a car from this website and add that car into gta vice city like do i have to copy files and paste them in a folder or something please help me in that thank you