Apple is considering going back on its longstanding insistence on having only pay-per-track songs with discussion of a subscription iTunes service, a rumor asserted on Friday. The company's iTunes VP Eddy Cue has reportedly been talking to music labels about a service that could run between $10 and $15. It would reportedly be an unlimited service, but the New York Post contacts implied that there might be tiers based on how long content would be accessible or how far-reaching the service might be.