My roommate Michele and I put together some audio for M2 et al. in case you want to add some "foreign voices" to your game. Feel free to use any, all, or none of these as you would like! :P skitter_shot_audio_files.zip
Moofed those are great, what TTS generator did you use? I've often found myself wanting to do things like this for certain creatures like robots and demons or what not.
I used an app on my android phone called Tell Me in combination with voice packs of various accents. The app lets you export a wav file, or you can just play it directly from its text input.