Also to save space on my Macbook hard disk. Well, the real sequence of this conversion is the following: WAV 44.1khz/16bits -> MP3 320kbps -> WAV 44.1khz/16bits -> AAC 128kbps. In the first transition (from wav to mp3) you are losing audio information, that information is missing when you convert it back to WAV and it cannot be recovered. Best YouTube to MP3 Converter. YouTube Converter is the leading converter which allows you to convert YouTube videos to MP3 files with just a few clicks. It supports high quality MP3 up to 320kbps. Enjoy listening to your favorite YouTube songs in offline mode. bSUf.