Well, I don't know that there's much we can do about the voice issue! As for the username in the domain - is it possible to set up an anonymous account with Paraka for the purposes of the exchange?

If not, I'll leave it up to you, and any other podfic creators. If you don't want to mess around with duplicate audio files etc, then I'm okay operating in good faith that your recipients/listeners will honor your anonymity as much as possible during the anonymous period despite your name being attached (in whatever fashion). That is, if you're okay with that as well.