Hi,
You can use a mp3/video player joomla content plugin (you can find many of them on the JED:
extensions.joomla.org/category/multimedia/multimedia-players/
) in order to add your video/music to the products' description or a custom field of the table "product".
Then, you can edit the view file product / listing_img_title.php which is used on the listings by default (or another one if you use another layout) and add such code to process the tags where you want the player to appear:
echo JHtml::_('content.prepare', $this->row->xxx);
where xxx is to be replaced by product_description or the column name of your custom product field.
To check which view file to edit via the menu Display>Views, you can use the "Display view files" setting of the HikaShop configuration:
www.hikashop.com/support/documentation/1...-display.html#layout