Amazon's been really stepping up its game in the digital music business over the last 6 months. Last fall it overhauled its Cloud Player service to make it more competitive with iTunes Match, and earlier this month it introduced AutoRip.
It's work continues today, with a new announcement that it has just optimized its MP3 Store for the iPhone and iPod touch. That's right, you can now purchase music from Amazon from your Apple device, with tracks starting at just $0.69...