| 摘要 |
A method for playing an audio file on a portable electronic device includes receiving the audio file as an email attachment, sending a first request from an attachment viewer of the portable electronic device to an attachment server in order to determine a file type of the email attachment, building and storing a graph structure representing the audio file on the attachment server and sending a response to the attachment viewer notifying the attachment viewer of the file type of the email attachment, sending a second request from the attachment viewer to the attachment server to play the audio file, the request notifying the attachment server of a supported audio format of the portable electronic device and sending a transcoded audio file from the attachment server to the attachment viewer, the transcoded audio file corresponding to the audio file and having the supported audio format so that the transcoded audio file is playable by a media player of the portable electronic device.
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