Simple answer: the EB mod is continually updated, some features from more recent versions aren't present in older versions (obviously).
It sounds as if you are playing with v1.1, the Punic (Phoenician, Carthaginian, etc.) voicemod is included in the 1.2 patch and should solve your problem. Download it from the relevant page at https://europabarbarorum.org/ and make sure to install it to the correct directory (and not something like "RomeTW\EB\EB" as I did :|)