aamel786
You can use every file whatever you want, just place the path to your file behind "file". On default state you have to put your downloadable files into the wddownloads folder in your joomla root, as descriped in install instruction, but you can change this behavior by changing the code a bit, just read through the Joomlaportal Thread to find how to do so.
If you have another question about the Plugin, just ask in the Joomlaportal Thread, if you dont know much about german, you can ask in english also!

