output all languages, instead of just site default

hey, ive tried searching about for the answer to this, apologies if ive missed it somewhere, but here goes.

basically i have a site running en and fr, i have written a plugin that exports every post in a custom post type (wh_property) into to an xml file, it outputs all the data in the sites default language (in this case en), i would like to output both languages instead, ive found the data in the db and its being stored like this:

[:en]EN content[:fr]FR content[:]

but when it outputs, it only outputs the EN content, im using the following code to do this:

$args = array(
	'post_type' => 'wh_property',
	'posts_per_page' => '200',
	'orderby' => 'date',
	'order'   => 'DESC',
);

$qry = new WP_Query( $args );

$posts = $qry->get_posts();
foreach($posts as $poster) {

	...more code above...

	$main_content = $poster->post_content;

	$output_xml .= '<description>'.$main_content.'</description>';

	...more code below...
}

so basically im looking for a way to output all the post content, rather than just one language, is this possible?? thanks in advance

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