在市场上有一些免费的音乐下载应用程序，但我独爱其中一款。
There are a few free music downloading apps in the Market, but I like this one in particular.
当然，这种做法会产生负面的外部性：免费下载音乐的人，不一定都会付款购买使用缺乏资源的部份。
It's certainly true that there are some externalities --where some people will enjoy the music for free without ever takingpart in paying for the scarce components.
我不确定从免费音乐下载应用程序上下免费下载音乐是否合法，但我能肯定的是搜索一下就能得到如此多的文件是十分方便的。
I'm not sure how legal the free downloads from the FreeMusicDownloader app are, but it sure is convenient to have so many files just a search away.
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