We haven’t a clue why Sony would choose today to introduce its S Series Walkman–after all, the company’s Reader Daily Edition was also just announced, and it’s undoubtedly the show stopper of the two. At any rate, those more interested in portable music than portable words just might find this tidbit more interesting. As rumored, the S Series Walkman Video MP3 player is real, and while it’s definitely no iPod killer, it’s unique in its own way. For example, it features built-in stereo speakers, a 2.4″ QVGA