Ok, HUUUUUUUUUUUUUUUUUUUUUUGE longshot here, but...
How about a voice sample for each race, for each gender, avalaible on this web site as MP3 / WAV files?
I'm just asking for one or two sentences, just to get a good feeling of the voices. How do Raia, Keskodai, Obozaya or Altronus sound like? How do a SRO, urog or gray (when mind reading) sound like?
Dude, you could answer the long awaited question about how dwarves, elves and orcs sound like.
Trivial? Maybe, but... QOL stuff :)