Select the Insert menu then click More Gadgets.
Find and open the Insert menu in the Google Sites Editor. You will be able to see a list of gadgets you can add to your site, like Links, Tables, and Images. Find the More Gadgets option, and click it. This will let you add editable tools like POWr Music Player to your site.
The Gadget manager will be visible. Click Add Gadget by URL. Then copy and paste this exact URL into the box. Click on Add to finish.
Now that you've added your new, editable Music Player Widget to your Google Sites page, you might want to resize the Widget. Use the different options in the window to select the height and width of your plugin. You can also choose to add a border, scrollbar, or title around your Music Player Widget, but we don’t recommend it. There is more editing control through the plugin itself.
Set up POWr Music Player
Visit your live Google Sites web page and click the settings gear in the upper right corner of the Music Player Widget.
In the POWr Editor, click Import Existing Music Player, find Music Player- and click Copy.