A File formats

Icon	File Type	Extension	Action when selected

	Directory	none	The browser enters that directory
	Audio file	various (see section A.2)	Rockbox takes you to the WPS and starts playing the file
	Cuesheet	.cue	View a cuesheet file
	Playlist	.m3u, .m3u8	Rockbox loads the playlist and starts playing the first file
	Rockbox firmware	.ipod	ROLO will load the new firmware
	While Playing Screen	.wps	The new WPS display configuration will be loaded
	Language File	.lng	Loads a language file
	Text File	.txt	This will display the text file using Rockbox text browser plugin
	Configuration File	.cfg	The settings file will be loaded
	Font	.fnt	This font will replace the current one
	Plugin	.rock	Starts a Rockbox plugin
	Chip8 game	.ch8	Play a Chip8 game
	Image	.jpg	View a JPEG image

Format	Extension	Notes

Lossy codecs

MPEG audio	.mp1, .mpa, .mp2, .mp3
OGG/Vorbis	.ogg	Some old “floor 0” files may crash Rockbox.
Musepack	.mpc
Advanced Audio Coding	.m4a, .m4b, .mp4
Windows Media Audio	.wma, .wmv, .asf
ATSC A/52	.a52, .ac3	Supports downmixing for playback of 5.1 streams in stereo.
ADX	.adx
Speex	.spx


Lossless codecs

Waveform audio format	.wav
Audio Interchange File Format	.aif, .aiff
Free Lossless Audio	.flac
Apple Lossless	.m4a, .mp4
Wavpack	.wv
Shorten	.shn	Seeking not supported.


Other codecs

Sound Interface Device	.sid
MOD	.mod
NES Sound Format	.nsf, .nsfe
SPC700	.spc
Atari SAP	.sap

A. File formats