Guides and tutorials
Concrete answers to everyday audio problems.
iPhone voice memos are M4A files. Here is how to turn them into MP3 in 1 minute, straight from Safari, without installing any app.
Convert a WhatsApp Voice Message (.opus) to MP3WhatsApp voice notes are .opus files that Windows and many players cannot open. Here is how to export them and convert them to MP3 for free.
M4A File Won't Open on Your Car Stereo, Android or Windows? Here's the FixYour M4A file refuses to play from a USB stick in the car, on Android or in an old Windows program. Explanation and solution in 2 minutes.
Extract Audio from an MP4 Video to MP3 (Free, Online, No Software)Keep only the audio of a video: lecture, concert, course, interview. Free method right in the browser, without uploading the video to a server.
MP3 Bitrate: Which to Choose? 128, 192, 256 or 320 kbps Explained128, 192, 320 kbps: what it really changes in sound quality and file size, and what to pick for music, voice or a car stereo.
Convert an Audio File Without Software on Mac and WindowsNo need to install iTunes, Audacity or a sketchy converter: your browser is enough. Comparison of methods and step-by-step instructions.