In the weeks since Since Neil Young unveiled Pono, billed as a high-fidelity alternative to the iPod and other .mp3 digital music players, music fans have been debating a host of issues, including whether or not listeners can truly hear a difference. With a bit more than two weeks to go, the Pono Kickstarter campaign is hovering around $5 million US after rocketing past its initial $800,000 US goal in less than a day.