To download mp3 (audio): Click "Download mp3" button
To Cut/Crop mp3: Please use the slider below and click on "Download mp3" button to download the selected part.
Note that video to mp3 conversion output is limited to 10 minutes.
Computer circuitry can hold power for a while after you take the battery out. That's why he says to take it out for at least 30 minutes. Otherwise all the power will not drain from the motherboard completely. You should also wear an anti-static wrist strap or ground yourself before touching your motherboard. Electrostatic discharge can fry your motherboard or other vital components.