2. Extract the custom songs from the ZIP files they come in. You can do this using a program such as WinRAR or 7-Zip.
3. Copy the custom songs to your Guitar Hero Aerosmith game directory. The default location for this directory is C:\Program Files (x86)\Activision\Guitar Hero Aerosmith.
4. Run the QuickMod tool. This tool will allow you to add the custom songs to your game. You can find the QuickMod tool online from various sources, such as the Custom Creators Wiki or the Guitar Hero Customs Forum.
5. Select the custom songs you want to add to your game.
6. Click on the "Add" button.
7. Click on the "Save" button.
The custom songs will now be added to your game. You can access them by selecting the "Customs" option from the main menu.