Kind of a grey area. Many mods release with voice files taken from the game - but in principle Bethesda could ask for seize and desist, no?
And as for the resource. I would think people would pull the voices they need from the original anyway. Rather if you built a database where one could search where to find the words in the original bsa; search specifics like race, gender too.
As chopping up the words wont solve anything really, since one has to find the words that has the same characteristics to fit together; then work with each word (eq, stretch, tune, fade, add sibilance or take it away, sound fx and what not), then work with the sentence as a whole. With a little work it would sound seamless
But I'd love to see a database that lists all the words in the BSA with a search function to beat, if you can do that in less than a year without going insane in the process that is :hehe:
Cheers!