Display album link on rtMedia's single media page

functions.php

<?php

/**
 * Display album name with permalink.
 *
 * @param $media_id Current media id for which we need to display the album link.
 */
function tmp_rtm_display_album_link( $media_id ) {

	global $rt_ajax_request;

	// Show only on full media page, not on media popup.
	if ( empty( $rt_ajax_request ) && ! empty( $media_id ) ) {
		global $rtmedia_media;

		if ( $media_id === $rtmedia_media->id ) {
			$rtm_album_name = rtmedia_album_name();

			if ( ! empty( $rtm_album_name ) ) {
				?>

				<div id="tmp-rtm-media-album-link" class="tmp-rtm-media-album-link">
					<span><?php esc_html_e( 'Album', 'rtmedia' ) ?>: </span>
					<a href="<?php rtmedia_album_permalink(); ?>"><?php echo $rtm_album_name; ?></a>
				</div>

				<?php
			}
		}
	}

}
add_action( 'rtmedia_actions_before_description', 'tmp_rtm_display_album_link', 8 );

Place this code snippet in your theme's functions.php file.

Note: This code snippet will show album link only on single media page, not on media popup.