function egmInsertFLVButton($form_fields, $post) {
	$file = wp_get_attachment_url($post->ID);
	if ($post->post_mime_type == 'application/octet-stream') {
		$form_fields["url"]["html"] .= "<button type='button' class='button FLV_embedd-" . $post->ID . "' value='[flv:" . ($file) . "]'>FLV Player</button>";
		$form_fields["url"]["html"] .= "<script type='text/javascript'>
		jQuery('button.FLV_embedd-" . $post->ID . "').bind('click', function(){jQuery(this).siblings('input').val(this.value);});
		</script>\n";
	}

	return $form_fields;
}
add_filter("attachment_fields_to_edit", "egmInsertFLVButton", 20, 2);

function egmSendToEditor( $html, $send_id, $attachment ) {
	if (substr($attachment[url], 0, 5) == "[flv:")
		return substr($attachment[url], 0, -1) . " 320 240]";
	else
		return $html;
}
add_filter( 'media_send_to_editor', 'egmSendToEditor', 20, 3 );