Hello,
In custom.xml add:
<animation_loop>no</animation_loop>
and for put twice your animation headers, for example :
<header>
<text_header_h1 x_pos="50" y_pos="12" size="60" letter_spacing="0" text_color="FFFFFF"></text_header_h1>
<text_header_h2 x_pos="50" y_pos="70" size="55" letter_spacing="1.9" text_color="FFFFFF"></text_header_h2>
<image>images/flashimages/your_image1.jpg</image>
</header>
<header>
<text_header_h1 x_pos="350" y_pos="350" size="12" letter_spacing="1" text_color="FFFFFF">My best photos...</text_header_h1>
<text_header_h2 x_pos="12" y_pos="70" size="50" letter_spacing="1" text_color="FFFFFF"></text_header_h2>
<image>images/flashimages/your_image2.jpg</image>
</header>
<header>
<text_header_h1 x_pos="50" y_pos="12" size="60" letter_spacing="0" text_color="FFFFFF"></text_header_h1>
<text_header_h2 x_pos="50" y_pos="70" size="55" letter_spacing="1.9" text_color="FFFFFF"></text_header_h2>
<image>images/flashimages/your_image1.jpg</image>
</header>
<header>
<text_header_h1 x_pos="350" y_pos="350" size="12" letter_spacing="1" text_color="FFFFFF">My best photos...</text_header_h1>
<text_header_h2 x_pos="12" y_pos="70" size="50" letter_spacing="1" text_color="FFFFFF"></text_header_h2>
<image>images/flashimages/your_image2.jpg</image>
</header>