Its a voice file, put the zip file in content\voice but this is only as good as whatever engine you use. Works well with svox victoria.
POI
Are you using a seperate mapchanger? If so then make sure that show poi is selected as well as maps inside the mapchanger settings.
Poi files go in content\poi.
Do poi files match the map you are using? NQ map and NQ poi, TT map and TT poi.