The competition is heating up over digital media: Sony (SNE) will unveil a new music and video...

|About: Sony Corporation (SNE)|By:, SA News Editor

The competition is heating up over digital media: Sony (SNE) will unveil a new music and video subscription service today, just hours before Apple’s (AAPL) music-themed press conference, while Amazon (AMZN) is talking with media firms about offering unlimited views of older TV shows and movies online.