Tell me something I don't know. Music is a consumer item. People want to buy it, use it, buy some more. They don't want any effort to play it. acb's comment about DVD singles unlikely to take off simply because they have a menu (ie. a point of annoyance before the music starts) rubs that point home. Any effort at all involved in getting music is going to piss the paying customer off enough that they may not bother. (via acb)