附加组件
![[警告]](https://addons.thunderbird.net/static/img/developers/test-warning.png?b=58a99cbb-667a0970)
权限
关于这个附加组件
Right Click and chose Loop for the examples:
http://upload.wikimedia.org/wikipedia/en/2/2e/Countdown%28example%29.ogg
http://videos-cdn.mozilla.net/brand/Mozilla_Firefox_Manifesto_v0.2_640.webm
http://upload.wikimedia.org/wikipedia/en/2/2e/Countdown%28example%29.ogg
http://videos-cdn.mozilla.net/brand/Mozilla_Firefox_Manifesto_v0.2_640.webm
