Rockbox allows you to put the album art, or another image related to the music on your playerto display it in the PictureFlow plugin or in the WPS. For this feature to work, you must observe a few rules.
Rockbox does not support album art embedded in your files’ tags, and will instead look for a picture located in the filesystem. In addition to this, the pictures must be in the BMP or JPEG formats. Rockbox does not support RLE-compressed BMP files, nor does it support progressive and multi-scan JPEG files. JPEG files must consist of a single scan with interleaved components, as progessive and multi-scan images require much more memory to decode.
The pictures can be named a number of different ways, and placed to a number of different locations. You can have pictures specific to the file or the album or use a generic picture. You can place the picture in the same directory as the file, in the parent directory or in a fixed directory named /.rockbox/albumart/. The order Rockbox uses when looking for a picture is as follows (a list in braces means that those file extensions are tried in that order):
The following characters will be replaced with an underscore (_) when looking for albumtitle.bmp or artist-albumtitle.bmp: ∖ / : < > ? * |. Doublequotes will be replaced by single qutoes. See AlbumArt in the wiki for more details and programs that will help you automate the process of putting album art on your player.