I have tried to find the file people are talking about namely php_id3.dll. I have read that you can install it with the id 3 on wamp but when i google it i get all sorts of scamsites.
Does anyone know where i can find it?
All the information you need is in the official PHP documentation:
The error you get (undefined function) means the ID3 extension is not enabled in your PHP configuration:
If you don't have the ID3 extension file (it is probably named php_id3.dll or something similar), you must either find a place to download it, or build it yourself from source.