Sony is unveiling new Walkman-branded portable media players. The most interesting of the bunch is the NWZ-S730F, which includes integrated active noise-canceling. Along with integrated noise-canceling technology in the unit itself, the NWZ-S730F (OK, so the name needs a bit of work) ships with 13.5mm EX noise-canceling earbuds, capable of blocking up to 75 percent of ambient noise, says Sony. This means that air travelers can listen to in-flight entertainment without hearing engine roar or a screaming baby over in seat 14A.

At just 7.5mm thin, this S-series device is the slimmest Walkman to date, yet it doesn’t skimp on features. It has a two-inch QVGA LCD screen that displays video at up to 30 frames per second, an FM tuner, and up to 40 hours of digital music between charges (or 10 hours for video).

Audio playback includes support for MP3, WMA, and AAC music files, and a clever "SensMe" feature, previously found on select Sony Ericsson phones, that suggests other music, based on your “mood” at the time. In other words, don’t expect it to suggest Metallica if you’re grooving to Kenny G.

The all-black NWZ-S730F costs $149.99, while the 8GB model sells for $179.99.