A Logo, in order to be previewed, it must have the same resolution as the proxy file used for the preview, to create a BMP file containing a Logo to be shown, just follow the next procedure:
1.Open the proxy file with Windows Media Player and selecting from Menu | File | Properties, this for knowing its resolution (e.g.: 600x400),
2.Launch the Microsoft Paint application and click on 'New Image', set the image attributes (Menu | Image | Attributes) based on the resolution of the proxy file (e.g.: width=600 and height=400),
3.Fill the image with the black color, this because Etere sets black as transparent when broadcasting Logo bitmaps,
4.Create or paste the logo you intend to use in the position you want,
5.Save the image with a bmp format (e.g.: Logo01.bmp).
Once the logo has been created, you can assign it to any of the 12 Logos available in Etere Configuration | Settings | Logo N, by right-clicking on a certain logo and selecting the 'edit' option and under the 'Aspect' section you will be able to assign the bmp file previously created that will be used for previewing.
After then, you can assign the Logo to any asset present on the system just by following the procedure described on the Broadcast a Logo/Crawl chapter.