Design: Phono X, a RIAA Phono Preamplifier

Building a quality phono preamp is still one of the joys of the audio electronics enthusiast. This is my first take on a RIAA phono premap.

Mass convert WMA to MP3 using ffmpeg and ruby

Today I found myself in a situation where I have a few (200+) WMA audio files. Due to personal preference I want MP3, not WMA. So, let’s convert that lot. What I want to do is convert all those WMA files to constant bitrate 192kbps, stereo mp3 files. (In my case, the WMA files have the required quality to use this settings). ~ The first tool you need is ffmpeg. If you’re on Mac, simple run brew install ffmpeg.