The minithumbnail of the album cover; may be null.
The thumbnail of the album cover in JPEG format; as defined by the sender. The full size thumbnail is expected to be extracted from the downloaded audio file; may be null.
File containing the audio.
Duration of the audio, in seconds; as defined by the sender.
Album cover variants to use if the downloaded audio file contains no album cover. Provided thumbnail dimensions are approximate.
Original name of the file; as defined by the sender.
The MIME type of the file; as defined by the sender.
Performer of the audio; as defined by the sender.
Title of the audio; as defined by the sender.
Describes an audio file. Audio is usually in MP3 or M4A format.