Can I get an audiobook of my book in another language?

Yes — translate the book into that language first (Editions card in the workspace), then open the Audio studio for the edition: the headphones icon on the edition's row takes you there directly, with narration voices matching that language. Narration voices are currently available for English, Spanish, French, Hindi, Italian, Portuguese, Japanese and Chinese; an edition in any other language can still be translated and exported, but the audio button will show that no voices exist for it yet.