I would be delighted to beta test. I would want to work on my spoken Portuguese so I could interact more naturally with my Brazilian colleagues.
I study French, German, Swedish, Mandarin, Japanese, Portuguese, Latin, dabbling in Polish, though it’s hard to find shows dubbed in Latin :). Someday will get to Russian and maybe learn Icelandic as a way of getting closer to the roots of English… but alas life is not forever.
I’ve written some LLM-based software for generating podcasts (www.anyglot.com, but the server currently offline). This project showed me that GPT4 is excellent at generating content in English, and in doing various NLP tasks but not translation which was better left for Google. ElevenLabs voices are fantastic but their Japanese would invent weird Kanji readings, tho that was when Multilingual V2 just came out so maybe they’ve fixed that already.