Are they the Apple earbuds? 3rd party headphones/earbuds might not fit (re: probably won't), and it might not be completely seated. Belkin and Griffen have an adapter. I'll be getting one as soon as I can find one - my Bose Quiet Comfort won't work at all 🙁
Not really complaining, mind you. I'll take the simplistic design over larger jack housings.