Pazera Free Audio Extractor is a nice new freeware program which strips out audio from just about any video format around. It’s fast, very simple and ultra customisable (you can even specify a target size for the resulting audio file), will cope with VOB files and you can also use it to convert audio formats if you have the need. I stripped out some audio into MP3 from a .VOB file and it worked perfectly, and the resulting file was reassuringly small. Definitely worth adding to the toolbox.
Pazera Free Audio Extractor is an absolutely free application that extracts audio tracks from video files without loss of sound quality or convert them to MP3, AAC, AC3, WMA, FLAC or WAV format. The application supports all major video formats (AVI, FLV, MP4, MPG, MOV, RM, 3GP, WMV, VOB …), moreover, allows the conversion of music files, so it can be used as a universal audio converter. The program has a number of predefined settings (profiles) specially designed for novice users. While more advanced users can customize audio encoding parameters used by encoder: audio bitrate, sampling frequency, audio channels, audio volume.