It’s time for another grab bag, selected from the many questions I get from readers. In this week’s column, I look at some questions about font size in iTunes (spoiler: your options are limited), ...

Digital sound is nothing more than numbers. What separates one container from another is how those numbers are packed, how much data (if any) is thrown away, and which devices understand the result.

There are a number of Linux commands that will display file system types along with the file system names, mount points and such. Some will also display sizes and available disk space. The df command ...