Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Napster Launches Music-To-Go Service (NewsFactor) NewsFactor - U.S. music-downloading service Napster has launched a preview version of its Napster To Go portable music service, which incorporates \Microsoft's (Nasdaq: MSFT) latest digital-rights management software, Janus.

Sci/Tech