Rob Glaser, the founder of RealNetworks, tried to circumvent Apple's restrictions in July 2004 with a service called Harmony.
He had attempted to convince Jobs to license Apple's FairPlay format to Harmony,
but when that didn't happen, Glaser just reverse-engineered it and used it with the songs that Harmony sold.
Glaser's strategy was that the songs sold by Harmony would play on any device, including an iPod or a Zune or a Rio,
and he launched a marketing campaign with the slogan "Freedom of Choice."
Jobs was furious and issued a release saying that
Apple was "stunned that RealNetworks has adopted the tactics and ethics of a hacker to break into the iPod."
RealNetworks responded by launching an Internet petition that demanded "Hey Apple! Don't break my iPod."
Jobs kept quiet for a few months,
but in October he released a new version of the iPod software that caused songs bought through Harmony to become inoperable.
"Steve is a one- of-a-kind guy," Glaser said. "You know that about him when you do business with him."