Wordpress Before/After Player

I'm needing someone to create a before/after player for music for my website. Essentially, there would be 2 versions of the same song that would be uploaded into the player. When someone goes to my site and hits play, it would start playing the before audio. There would then be a switch that they would flip, and the audio would switch to the after track, but be playing in the exact same place that the before audio stopped at. Again, if they switched back to before, the audio would then begin to play where the after track stopped. Below is a link to the website that has this type of player that I'm looking for. [login to view URL] thanks, Christian