Thanks but I have the solution !!!

You must edit the INDEX.PHP

Find

if (mysql_num_rows($result) < 1)
{
$sql = "SELECT * FROM `videos` WHERE
`video_type`='public' AND
`video_active`='1' AND
`video_approve`='1'
$sql_adult_filter
LIMIT 4";
$result = mysql_query($sql) or mysql_die($sql);
}

and replace for

if (mysql_num_rows($result) < 1)
{
$sql = "SELECT * FROM `videos` WHERE
`video_type`='public' AND
`video_active`='1' AND
`video_approve`='1'
$sql_adult_filter
ORDER BY RAND() LIMIT 4";
$result = mysql_query($sql) or mysql_die($sql);
}

this ORDER BY RAND() make a Random results showed.. It's fine !!

Now my content change on every refresh or visit...

Regards !!