Apple's DRM system, called FairPlay, is the most widespread.

苹果的数字版权管理系统叫FairPlay，应用最为广泛。

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That could be because Apple may be using its own DRM system, Fairplay, says DE Jager.

这可能是因为苹果也许打算使用它自己的DRM系统。de Jager认为这是一场公平的游戏。

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Most of these services used Microsoft's WMA format and Microsoft's Janus DRM system.

大多数这些服务使用的是微软的wma格式，以及微软的两面drm系统。

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The problem with all DRM is that, to date, there has been no DRM system that actually works!

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They could have taken to heart their customers dissatisfaction with their DRM system.

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While Microsoft does license its DRM system--to everyone from Yahoo!

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