I have a youtube 'talk' clip where the sound is badly effected by the acoustics of the hall the lecturer was speaking in. Win 7 we're talking about here. I used yamb to get the audio out and it came out as aac, as expected. Tried to feed that into Audacity and it wouldn't accept it. Spent the last two hours or so chasing all sorts of things around - Nyquist Soundgate for Audacity and ffmpeg and lame. Got the soundate in, it seems, but though ffmpeg are installed where they are supposed to be and so is lame Audacity refuses to accept them, use them. Just keeps telling me the library is not there - even after I locate it for it... Can anyone help me get this little job done some other way? Or tell me what's wrong with audacity. (2.0.5) ? Quickest, easiest is what I'm after... doing it myself isn't working too well...
Try opening the video in AviDemux. On left side menu, set 'Audio Output' to PCM. On top menu, 'Audio' > 'Save Audio' and give it a name (something.wav). See if Audacity accepts it.