Allready had that, and I had thought I had found the solution...

Happened on two different machines running Debian 9 and TDE (lastest stable):

I have links on my desktop (created with right-click/crate new/link to device.
One is a link to a local URL
Two are links to network shares (nfs)

The problem is that when I click on them, instead of opening konqueror, it 
opens Audacious (that then tries to, first, make a database of all the files 
and then to play them, which obviously fails).

It *has* worked correctly before.
On a machine where it works correctly File association shows nothing for 
*.desktop and *.kdelink; I thought I had solves it once by setting the 
association with konqueror but it does not seem to work.

Acces from konqueror works fine.

Thierry