You might think this was a story of a bitter man with an agenda against Apple. There, you'd be wrong.
Apple was dealing with a lawsuit from Burst.com in which they claimed to have originally come up with the idea for the iPod. Apple asked Kramer to testify on their behalf, talking about how he filed his patent years before Burst did. Instead of fighting further, Burst and Apple settled out of court. Kramer was paid a consultancy fee for traveling to California and making his deposition.
"The questioning by the Burst legal counsel there was tough, ten hours of it. But I was happy to do it," Kramer told the Daily Mail. "To be honest, I was just so pleased that finally something that I had done which has been a huge success and changed the music industry was being acknowledged."
Presumably on friendly terms, Kramer is negotiating now for compensation from Apple with regards to his original idea.