In h ammer when i make an ambient_generic and look through the sounds library alot of the voice sounds dont play but if i select one it plays in the map. At the moment i have to look at the script file and get the sounds names from there.

All the voice lines don't work, it's a well-known bug. I'd suggest extracting the whole vo/ folder using GCFscape, so it's easier to preview from. Most/all lines have the same VCD name as the raw wav file.