1)   MP3 WAV Video converter 6.0.2
Extract Audio track from any video format with excellent output quality to MP3, WAV. Convert any popular video to MP3, WAV.

 2)   Flv Audio Extractor 1.02
Flv Audio Extractor is a easy-to-use free tool to batch extract audio from flv files. The extracted audio data will be saved as MP3 file so you can play it with Windows Media Player or other audio players.