Giallo is pronounced as follow:
The first sound is the G from George
This is followed by the e in he (but very, very short)
This is followed, as I...I...idiot pointed out, by 'ah-low' (but both sounds also rather short); the Italian 'a' has a brighter sound than the English 'a'.
The word means 'yellow' in Italian (yellow doesn't refer to cowardice in this language), detective novels used to have a yellow cover in Italy
(In France they had black covers, and therefore were sometimes called 'romans noirs' - black novels)
Django: the 'j' is more like the 'y' in yes, furthermore an Italian would never pronounce the 'a' of Django as the a in 'cat' or 'hat', more like the a in 'bark'
These things are hard to describe, maybe we should ask our new member Poggy to say the words out loud on You Tube
(Poggy: the Tube is yours!)
By the way: as far as I know, it is proNUNciation