How to use Skype in External TV via HDMI cable in windows 7

1. Playback devices
Right-click the speaker icon in the Taskbar notification area
In the menu that pops up, click Playback devices.
http://ask-leo.com/how_do_i_get_sound_out_of_the_correct_speakers_in_win...

2. How to enable the Skype sound in external TV via HDMI cable?
Under Tool --> Option
Audio settings -- > Speakers --> XXx Dispaly Audio

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