Dear T5SP dedicated server owners,
As a big fan of the Black Ops zombie mode, I'm pleased to share with you the fix I made for the voicelines issue!
You can download it here.
Just extract the ZIP archive content to the T5 storage folder of your dedicated server and you should be good to go.
If you want more details about how it works, check out the fix repository.
Let me know if everything works fine on your side, and happy hosting!