This is a chrome extension that simulates the sounds and load times of your old 56k dial up modem.
To install, clone the repo into a folder some folder somewhere on your machine. Then open chrome and open the extension manager page. You can do this by clicking on the menu button and then select 'tools' > 'extensions'. Alternatively, you can type "chrome://extensions" in to the address bar. Tick the developer mode button. Click on "Load unpacked extension..." Find the folder where you cloned this repo and click open.
Then enjoy a more retro chrome.