All jokes aside, we are about to be treated to the first otherworldly
recording courtesy of the planetary probe Huygens probe launched from
the Cassini Saturn orbiter. Apparently the Russians put a microphone
on a Venus probe in the seventies, but they didn't get much.

From Wired article:
"We are going to hear what Titan sounds like," said Lebretton. "There
is a simple microphone on board, but it should be able to collect
sound -- for example, if there is lightning, we will hear it. We may
also detect sounds due to winds."
http://www.wired.com/news/space/0,26...w=wn_tophead_1

More reading available he
http://www.esa.int/SPECIALS/Cassini-...K30A90E_0.html

Which all of course begs the question:
What is your favorite microphone for large gaseous planetoids?

/Magnus