San Diego - Sony (NYSE: SNE) on Thursday introduced three new Walkman digital music and video players (series S, E and B). The Walkman S-series ($150 4GB, $180 8GB) supports Windows video files with DRM, and features in-flight noise-cancelling headphones and SensMe Channels -- automatically created to align with a user's preferences. The E-series ($100 4GB, $140 8GB) also supports video but offers fewer features, while the B-series ($45 1GB, $60 2GB) line is meant as an entry-level music player, and drops video support entirely.

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