Cannot Extract mp3 from captured .flv (YouTube) video

[Rosariods]

I recorded a video from YouTube this morning, and attempted to extract the audio in mp3 as per the instructions.. instead of extracting the mp3, I get a message stating that 'x' number of audio frames were extracted, and that 0 of 1 files were converted or something like that. So, I opened Replay Converter and tried to do it that way. It would start, then a window would pop up stating that 0 of 1 files had been converted. I tried converting it to a variety of formats ( I wanted AAC) and qualities with the same result. I have done this before with success, what can I do to get the music from the video?

--Thanks--

[Rosariods]

I used the converter tool built into the Media Catcher to do it... I wonder why the standard methods and the Replay Converter wouldn't do it though... I have used the Replay Converter many times to convert stuff from youtube to AAC...