check what speaker gmail is using? put on your headphone and try

来源: longtermInvestor 于 2013-06-10 01:16:49 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (133 bytes)

If you can hear with headphone, then you know the problem. go to setting on gmail, under "chat", you can pick/test speaker.

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