I have the same problem with Macedonian characters.
UTF-8 is always good for Macedonian but in this case it does not work.
I suppose that the problem is somewhere in the flash file.

Please sugest a solution, if there is one.

My custom.xml file:

<?xml version='1.0' encoding='UTF-8' ?>
<header_vars>
<graphics_color>FFFFFF</graphics_color>
<animation_loop>yes</animation_loop>

<header>
<text_header_h1 x_pos="90" y_pos="65" size="18" letter_spacing="1.5" text_color="666666">ПРОБА 1</text_header_h1>
<text_header_h2 x_pos="91" y_pos="85" size="11" letter_spacing="3.2" text_color="FFFFFF">слоганот тука</text_header_h2>
<image blur="yes">images/image1.jpg</image>
</header>
<header>
<text_header_h1 x_pos="90" y_pos="65" size="18" letter_spacing="1.5" text_color="666666">ПРОБА 2</text_header_h1>
<text_header_h2 x_pos="91" y_pos="85" size="11" letter_spacing="3.2" text_color="FFFFFF">слоганот тука</text_header_h2>
<image blur="yes">images/image2.jpg</image>
</header>
<header>
<text_header_h1 x_pos="10" y_pos="10" size="23" letter_spacing="0" text_color="666666">ПРОБА 3</text_header_h1>
<text_header_h2 x_pos="50" y_pos="40" size="14" letter_spacing="5.4" text_color="FFFFFF">слоганот тука</text_header_h2>
<image blur="yes">images/image3.jpg</image>
</header>



<music_file loop="no" music_control="no" play_music="no">sounds/music.mp3</music_file>
<play_transition_sound_file>no</play_transition_sound_file>
<display_preload graphic_color="669ac6">yes</display_preload>
<replay display="no" x_pos="493" y_pos="135" size="8" letter_spacing="1" bgd_color="FFFFFF" text_color="000000"> REPLAY</replay>