Converting .flv to .wav for CD

I am converting some youtube videos to wav or mp3 to burn to audio cd's and have found a strange problem. It seems like some files will only encode and burn correctly if I use a certain encoder ( I have ffmpeg , winx flv to mp3 , avidemux , format factory , and vlc player - one of these usually works ). The files I am converting use acc audio with a sample rate of 44100 and a bitrate of 131 kb/s according to ffmpeg. When I use ffmpeg I use the command lines :

Is there one set of ffmpeg commands that can convert all the audio for burning to cd ( I'd like to just use one encoder since I can't tell which one works properly until I burn the encoded files to a cd-rw disk to see if it plays properly )? Is there a way to look at the video's specifications to tell which command to use to encode it? Thanks for any information...