Overview
By reteiving information from the music player using ECP commands, we
can show the current song, artist, and album in a screen saver.
Design
This design is similar to the flying text screen saver, except that we
fetch the song information with each repaint to ensure the display is
up-to-date.
Tip -- Hiding The Screen Saver
Screen Savers are required to have a .roku extension.
However, such files show up in the applications list in the GUI.
However, most users don't want to see screen savers in the
applications list, just in the screen savers list. To fix this, place
the screen saver in a subfolder of ScreenSavers starting with a
period. This is a "hidden" directory. Any applications in a hidden
directory don't show up in the GUI.
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