1. Documentation for the .is_audio_player file

List of available options recognized by Banshee :

Label	Description
name	The device name that will appear in banshee
audio_folders	The list of folders where music files are stored on the device. Banshee will copy tracks to the first folder in that list
video_folders	The list of folders where video files are stored on the device. Banshee will copy videos to the first folder in that list. If it is not set, videos will be copied to the same folder as music files
output_formats	The list of file types supported by the device, as MIME types
folder_depth	The maximum foler depth supported by the device. Do not set it if the device has no limitation
cover_art_file_type	The type of cover art image supported by the device, such as jpeg, png, tiff, ico or bmp
cover_art_file_name	The filename expected by the device for the cover art image
cover_art_size	The size of the cover art image, in pixels. The image is a square, so it's only one number
playlist_format	The list of playlist formats supported by the device, as MIME types
playlist_path	The folder containing playlists files on the device, relative to the root folder of the device. If not set, banshee will copy playlists to the same folder where it copies tracks
folder_separator	Separator between directory/file names in playlist files. If not given, "Unix" is assumed, which uses '/'. Some players require "DOS", which will use '\'

Items in a list are separated by a comma.

As an example, here's the content of the .is_audio_player for a Sansa e280 :

audio_folders=music/
output_formats=application/ogg,audio/mpeg
cover_art_file_type=bmp
cover_art_file_name=cover.bmp
cover_art_size=100