Does a lot!

There is a huge range of conversions this app can do, video, audio and both. The simplicity of it offers an ease of use that few apps posses without sacrificing ANY function. Worth more than what they charge by far, i may never convert another file on my pc again! Developer support/communication is excellent. Wish I could rate it 6 stars now that its been updated (supporting aiff/caf:).

UPDATE: I had to add this, I was just blown away. I had a (supposed) music file that I could not play on my pc or iPhone...not only did this app convert it to a playable format it automatically tells you what it is (and why it wasnt working). Ever heard of a music file as an mjpeg, I havent but that is why it wouldnt play, every player thought it was a movie when clearly it wasnt. Really impressed, great work Bill Santiago!

UPDATE2: caf works great...thanks for the update.

Iphonoob about MConverter Medias Converter