Rockbox

Rockbox is an alternative firmware for many MP3 players, including the iPod.

Comparison with the iPod's original firmware

It has some advantages over the original firmware:

It can play more audio formats (FLAC, OGG, MIDI, etc)
More powerful controls.
Its visual appearance can be customized.
When connected to a computer, it appears as a simple USB drive. One can just drag-and-drop music files onto it. In contrast, the original firmware requires either iTunes or macOS Finder to copy music to the device.

It also has some disadvantages:

The controls are less intuitive than the original firmware.
The themes are community-sourced (even I have made one), and vary wildly in quality.

The controls on Rockbox differ from the original firmware.

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Here's how we'll refer to the buttons in this section:

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