MP3 Encoder Help Guides and reference for converting audio files to MP3 on macOS
Help topics File Info Window

File Info Window

A read-only view of the source file's properties, nested inside the Metadata window.

MP3 Encoder File Info tab showing file type, size, length, and bitrate

The File Info Window is actually a tab inside the Metadata window. It displays properties of the source file — file type, file size, length, bitrate, and so on — without allowing any of those values to be edited.