Apple is at work on a new file format that should enable "adaptive steaming" of high- or low-quality audio to iCloud users, The Guardian claims. The format will allegedly adjust itself to the bandwidth and storage on a given device, and it's speculated that it could allow downloading "HD" audio to iOS devices, or else form the backbone of a long-rumored streaming music service. More firm, though, is thought to be integration with iTunes Match, the combination upload and streaming service launched late last year.
