FLV To MP3 Converter is a simple and useful program for converting any FLV file into a wide range of audio formats, for playing them anywhere, anytime. Rip results to CD. If you mean export the audio from the video MP4 file then use ffmpeg, I do this all the time from FLV files. Firstly install ffmpeg: After all the settings are configured, to convert this exact file press the button “Convert” located in the lower right corner of this panel. If you want to convert from MP4 to MP3 more than one file, opt for a bulk conversion option: click on “Add to Queue” button after tweaking the settings and repeat the process for all the files that you want to convert. Make sure all the desired files are in the queue and all the settings are configured properly. Then, press the “Convert” button to start the conversion. When the conversion is completed, the program will suggest you to check the output MP3 file in the containing folder. problem this page converting .m4a to .mp3 Freeware convert m4a to mp3 Support multi-core running to maximize the conversion speed. MacX Free MP3 Video Converter supports Multi-track HD video M2TS, MKV, AVCHD, HDTV BDAV and MPEG-TS that helps you to choose any audio language track to be converted to MP3. This is extremely helpful for those who want to learn foreign language.