WordPress Template: Echo Shortcode Problems

I am using the repeater field of the Advanced Custom Fields plugin for WordPress to display song names and where relevant, offer a sample to play using the Compact Audio plugin. I am using the echo shortcode function and this works to an extent - however, it's not actually executing the shortcode and is instead showing the file URL (which is the value of the field "ceremonial_sample"). I have used this on other sites (albeit not within the repeater field - that's the only difference along with the field names). Can anyone tell me how to fix this? Here is the page where I'm experiencing the problem: [login to view URL] -------------- Code below: <?php // check if the repeater field has rows of data if( have_rows('ceremonial') ): // loop through the rows of data while ( have_rows('ceremonial') ) : the_row(); // display a sub field value echo '<div class="song">'; the_sub_field('ceremonial_song'); echo '<div class="sample">'; if(the_sub_field('ceremonial_sample') ): echo do_shortcode( '[sc_embed_player fileurl="'.the_sub_field( 'ceremonial_sample' ).'"]' ); endif; echo '</div>'; echo '</div>'; endwhile; else : // no rows found endif; ?>