Hi,
Those components are stored in either:
C:\Program Files (x86)\NCH Software\Components
or
C:\Users\<username>\AppData\Roaming\NCH Software\Components
(adjust to fit on your computer as necessary, e.g. if not a 64-bit system it will just be Program Files, and the AppData path is assuming windows vista onwards)
Keep in mind that VideoPad will re-download these files if it needs them.