To do this first we need to create a new toolbar and then map the required folder.
Example : Let us create a toolbar which has the folder Music mapped.
To do this :
1. Right click on the taskbar and select Toolbars > New toolbar
2. This brings up a window where the required folder needs to be selected (Music in this case), so click Select Folder.
3. Now notice that taskbar shows a Music titled block, on clicking the >> icon next to it will display all the contents of that folder.
This becomes even more useful than having a shortcut created on desktop because now there will be no need to go to Desktop everytime to access the required folder as it resides directly on the taskbar.
A great time saver when few folders are frequently accessed, just create their on toolbar and browse them directly through the Windows taskbar. 🙂