Microsoft brings a new digital audio device "Zune" on Nov.14th, which will be in rivalry with iPod(Apple), into the digital music industry almost monopolized by Apple in a respect of delivering music on line. At the same time, they also release a new on-line music store "Zune Marketplace", which is in rivalry with iTune Music Store(Apple). How will their share be changed in the future?

ついにマイクロソフトが「iPod（Apple）」に対抗するデジタルオーディオ機器「Zune」を今月14日にも投入するとのこと。と同時にiTunes Music Store（iTMS）対抗の音楽オンラインストア「Zune Marketplace」も立ち上げるという。今後どうなるんでしょう…。