LAME MP3 Encoder (64-bit)

LAME MP3 Encoder 64-bit is an open-source audio encoder for Windows PC. The encoder is not a graphical application that you can double-click, but a command-line tool, usable from the Terminal application (which lives in the utility folder inside the Applications folder) or other graphical applications.

Features and Highlights

• Many improvements in quality in speed over ISO reference software. See history.
• MPEG1,2 and 2.5 layers III encodings.
• CBR (constant bitrate) and two types of variable bitrate, VBR, and ABR.
• The encoding engine can be compiled as a shared library (Linux/UNIX), DLL, Directshow filter, or ACM codec (Windows).
• Free-format encoding and decoding.
• GPSYCHO: a GPL'd psycho acoustic and noise shaping model.
• Powerful and easy-to-use presets.
• Quality is better than all other encoders at most bitrates.
• Fast! Encodes faster than real-time on a PII 266 at the highest quality mode.
• MP3x: a GTK/X-Window MP3 frame analyzer for both .mp3 and unencoded audio files.

Note: The download is a compiled LAME MP3 binary (not a source code).