Once upon a time, the website of Ninja Tune Records, ninjatune.net, could be expected to serve up a half dozen fine MP3s at any moment. Then came digital retail, and MP3s went from promo items to merchandise. But now Ninja has revived its free-music program, this time in the guise of podcasts. The label has three regular feeds, one of its estimable Solid Steel radio show (MP3), another from label founders Cold Cut and a third from its hip-hop arm, Big Dada. More info at ninjatune.net/podcasts. To be fair, the Ninja site does host the occasional free download, but they tend to be from Big Dada rappers, not from the likes of Amon Tobin, Funki Porcini or Kid Koala.