How do I enable downloading in my audioplayer ?

Hi
I have installed audio player on my blog
https://www.nickv.fr
and I would like my mixes to be available for download.
I have enabled the download option in the feed options and enabled enclosures too but nothing happens.
I thought that downloading was automatically enabled for this widget but it doesn’t work for me.

I have tried ws audio player as an alternative, it provides a download link but doesn’t have as many other features as audio player and loading time of tracks can be long and tedious.

Any help or alternative solution would be much appreciated.

Thank you
Nick