Just installed Trophies myself.
After installing the instrument itself, I then clicked on the links on the installation page (Studio Linked site) for the 'sound content' of which there are 5. I downloaded one at a time - which took a while because they are big files - and installed them one at a time.
Once downloaded, all I had to do was double click on the downloaded file - it's a zip file. The rest was plain sailing. The sounds were then available in the instrument when I opened it in Studio One.
Hope this helps.