Sony is releasing its first digital music players that are compatible with MP3 files in the UK next month. From November, you’ll be able to buy Network Walkmans NW-E99 for around £160, and NW-E95 for £120. The flash-based players have 1GB and 512MB of memory respectively. Using Sony’s Atrac music file compression, the NW-E99 will be able to squeeze in over 40 CDs worth of music. The players should provide around 70 hours of battery life and weigh around 40g.