MusicMath is a free-to-use audio calculator for Mac OS.
Main features:
- Values in Hertz and in Ms can be modified in Delay module to obtain the tempo
- The result in the Tap Tempo module can be copied as global tempo.
- Transpose: converts semitones to Time Stretching values.
- Notes: convert MIDI notes to equivalent frequencies (Hz).
Xilisoft DVD Audio Ripper for Mac is what you need to rip audio from DVD
