So the majority of you playing Plutonium BO2, and don't lie, have pirated DLC content.
The issue with that, is your content isn't complete, which is why you have no voice lines and no announcers for MP and Zombies on DLC maps. You are missing or have corrupted (or even intentionally edited) sound files.
So how do you fix that?
Firstly, see if you have a friend that owns the DLC and see if they can copy and send the sound files and the language load files.
If you don't know anything that can do that, go to this site here and look for the link(s)
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After you have the files, paste them in the corresponding folders:
.ff files go to (Call of Duty Black Ops II\zone\english)
.SABS & .SABL files go to (Call of Duty Black Ops II\sound)
The files contain zombie and multiplayer sounds so it should fix all DLC maps, you can also hear the voicelines while on dedicated servers 
You're welcome
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