I see some folks using this
and i guess it lets you include pictures and text..
the secret to making a rar.mp3 or a zip.mp3 playable without extracting: be sure to set your archiver (winrar, winzip) so it uses no compression, in winrar you would hit options, then settings, then create default, compression method: Store. since the filename would be changed to and end with .mp3, a double click would play it in your player as an album, and you can drag and drop it into the main winrar window without changing the extension and view and extract the contents. hope this info is worth something