AUDACITY (Windows, Mac, Linux)
A superb audio recording and editing app . I use it for all my audio recording and processing - don't waste your money on commercial products.

Searches for and organizes images and videos. Allows saving of disk space by identifying duplicates and allowing you to eliminate them. From
Google and therefore will undoubtedly report tracking data (of images = BEWARE!).

GIMP (Gnu Image Manipulation Program) (Windows Link).
Comparable with Photoshop in sophistication.

VLC MEDIA PLAYER   (Windows, Linux)
Best of the bunch.