It’s all go in the world of digital music: HP is expected to launch its version of Apple’s iPod this afternoon (or this morning if you live in the US), and Microsoft’s about to unveil its rival to the iTunes Music Store, which is pegged for a 2nd September launch date. There’s an interesting nugget in this Rolling Stone story:

Microsoft has made several overtures to Apple to make its store compatible with the industry-leading iPod but has been rebuffed. (Apple declined to comment.)