| 摘要 |
A portable media device includes a processor and a memory. The memory stores instructions that when executed cause the processor to access a media file stored in the portable media device based on a trial access term for the media file, determine that a trial period within the trial access term for the media file has expired, and set the media file as inaccessible to the portable device in response to determining that the trial period within the trial access term has expired.
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