Just put that on my test site Adam and it does work, but still not exactly what I.m looking for although it's just the job for something else I have in mind.

It does though make the stock media manager display in product description look a little better, just pop the line of javascript anywhere in product description and any media manager mp3 links have a proper little play/stop button etc.

Sadly though I still need to figure out how to get a link to show in categories product listing and not just in the single product listing.

Cheers again Adam.