The Quickload list gives you quck access to the files in the current directory (which is the directory in which you last saved or opened a file, or directory in which jambient.exe resides, if you haven't yet saved or opened a file).
Click on Quickload popup. A list of files appears. Click on a file to load it, or <Close> to abandon the operation.
Quickload opens files using the current Elements to Open settings in the Save/Open dialogue.