Apple is planning a cloud-based music locker service that will enable its customers to stream music to multiple devices. The Wall Street Journal reports that what makes the Apple proposal different from Amazon’s recent Cloud Drive rollout is that Apple is seeking paid licenses from the labels for its service (Amazon started its service without gaining such approval).

Although the Apple version has yet to go public, insiders report that it will work differently than the Amazon Cloud Drive and Player, which acts much like an external hard drive. Through deals with the labels, the Apple service will allow for a single master copy of a song to be stored on its servers, that can then be shared with multiple users (the Amazon service requires users to upload each song they want to access remotely).

“The idea is that Apple will let users store songs they’ve purchased from its iTunes store, as well as others songs stored on their hard drives, and listen to them on multiple devices,” reports WSJ.

Recent rumors suggest Apple will charge users an annual subscription fee, possibly in the area of $20.

Related Wall Street Journal article: “Amazon’s Cloud Music Move Isn’t Earth-Shaking” (3/29/11)

Related Wall Street Journal article: “Amazon’s Cloud Service Is A) Legal B) Illegal? C) Probably Here To Stay” (3/29/11)

Related Los Angeles Times article: “Price war! Amazon launches 69-cent MP3 store for top-selling tunes” (4/28/11)

Related TechCrunch article: “Behind the Scenes: Record Label Demands from Amazon” (4/29/11)

Related CNET article: “Expect Apple to charge for music cloud” (4/26/11)