单项选择题

[听力原文]9-10
W: Look, Bert. My tapes always get stuck in the player.
M: Why not get an MP3 player
W: A what
M: An MP3 player. It’s the latest thing in digital audio technology.
W: What do you mean, "digital audio technology"
M: MP3 format is a new way of compressing large audio files into a much smaller size. Using the Internet, you can download songs in MP3 format and then play them back whenever you want.
W: Do you have to use the Internet to use MP3 technology
M: Not necessarily. Using MP3 technology, I recorded my whole CD collection into my computer and now I listen to music while playing computer games!

What does the man introduce to the woman（）

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