The only thing special about this 128MB is the fact that it displays album art in a circle on the front. In Korea, you can purchase virtual albums with the music and art on board. This way, you're fooling yourself into thinking you're viewing the front of the CD as it's spinning away in your player.

Other than this "digital album" art oddity, there's not much of note. We'd much rather buy the actual CD and rip it onto our standard players. – Jason Chen

Self-playable digital music albums [PDALive via Slashgear]