Web development -- 2

PLEASE READ THIS CAREFULLY BEFORE BIDDING. I have built a new website with WordPress on my new godaddy managed hosting [login to view URL] I need 2 special audio playlists that will allow audio to be played from BOTH playlists at the SAME [login to view URL] in this page on my old site, where there can also be a selection of links that switch between different sets of music [login to view URL]://[login to view URL] finished players need to be mobile responsive, so they still sit next to each other, even on a smaller mobile screen. I don't want to change important coding for my whole site (eg remove auto pause function)  because there are still some pages on my new site that have several single audio players in the same page, that DO need to stop playing when a new audio file is started. I've done a lot of googling and tried lots of different plugins, so please only bid if you're confident you can make this work and understand exactly what I need.