This question came up on my Facebook feed today and it totally stumped me because I don't think I've ever heard a Bothan speak. They were absent from the Clone Wars TV series and I don't recall them being in any Star Wars games that I've played - mind you, that's probably only Knights of the Old Republic. Am I missing a scene from the movie aside from the "many Bothans died to something something" where they're mentioned/seen speaking?
The CRB says they're capable of speaking many languages (including Basic) but do they have a unique sound? I suppose it's not terribly important if they do, but it's accepted that some races in canon/EU speak with a certain dialect. Twi'lek's might speak with a French accent, Pantorans speak with a South African tone and many inhabitants of the Core Worlds like Obi-Wan or various Imperial officers have a British inflection in their voice which has been dubbed Coruscanti. Are Bothans anything like this?