Music industry executives are evidently not good at keeping secrets -- a number of them have gone on the record talking about Apple's proposed streaming "radio-like" service, currently dubbed "iRadio," and some details behind it. Following an apparent breakthrough in negotiations with Universal and Warner, the company is pushing to get the service launched sometime this summer, according to reports. Likely to be incorporated or at least tied to the iTunes Store, "iRadio's" main sticking point so far has been royalty rates.