I remember you noting at some point in the FAQs section that you were once interested in voice samples. Is that still in effect or a moot point?
Well, actually the FAQ says:
Q: You should do voice acting for the map!
A: While I do partially agree, there are two problems with this. Firstly, unprofessional voice acting is liable to sound a lot worse than the voices you give to the characters in your imagination, and could thus seriously detract from the game’s atmosphere. Secondly, the sheer amount of dialogue in some of the maps would cause them to balloon to insane sizes. I’m not ruling out the possibility of doing that in the future, but it would only happen if I get a better place to host the maps on and some really dedicated and skilled voice actors to help me out.
So basically, although voice acting COULD be cool, it would most likely be downright awful unless it's done to a professional standard... which means I'd rather leave it as text rather than half-ass it. Also, not everyone will be interested in downloading a massive (hundreds of MB, I'm sure) version of TTBE just for the voice acting.
Plus it would take a long time to implement and re-time the cinematics to match the voice acting (which would then eat away time from my work on Chapter VIII), so it's fairly low on the priority list.