I’m not sure if plugins like this exist, but I threw together Dead Simple Asset Replacer today to solve an annoying problem and think that others may get some use out of it.
This plugin can be used to immediately replace all audio or image assets in your game from one asset id to another. This is great for replacing copyrighted audio assets when you can’t find them! I imagine it could also be useful for replacing old images with a higher quality version.
The plugin will also set a ChangeHistory waypoint, so you can undo the replacement if something goes wrong. Also, the plugin will select every asset that was replaced - no more wondering where that copyrighted sound instance went!
Of course, this is a problem that you could always easily solve by typing up something in the command line, but why not make it Dead Simple?