Put this in your rumor bucket for now, but the Financial Times says Apple is in discussion with the music industry over a possible “all you can eat” music plan for iTunes.Apple is in discussions with the big music companies about a radical new business model that would give customers free access to its entire iTunes music library in exchange for paying a premium for its iPod and iPhone devices.The “all you can eat” model, a replica of Nokia’s “comes with music” deal with Universal Music last December, could