I like Firefox very much, but when I want to use the site www.livemocha.com I had to switch to Internet Explorer, because at firefox I cannot add audio for the exercises and reviews in Livemocha. Trying to do so gives me the error : "connection failed".

Hi! Great question. My name is Nate and I work with customer service at Livemocha. We'd love to diagnose what is happening and get everything up and running for you as quickly as possible. Can you email this question over to support@livemocha.com? That way we'll have your email and can help get this running ASAP! There are a few possible causes and we'd be happy to look into them with you. Thanks! -Nate Livemocha