Last.fm Scrobbler for Chrome was created for people who listen to music online through their browser, and would like to keep an updated playback history using last.fm's scrobbling service.
You can obtain the scrobbler either from Chrome Web Store directly or by installing as an "unpacked extension".
Chrome Web Store
You can get it directly from Chrome Web Store:
Grab a copy of the source code either by cloning the repository or by downloading and extracting the zipped source.
Next, enable "Developer mode" within on your Chrome based browser.
Finally select "Load unpacked extension" and select the location you have saved the source.
Check the wiki pages to understand development of connectors.
You can also join us on our IRC channel #web-scrobbler on irc.freenode.net.
If you are unfamiliar with IRC you can connect easily via Kiwi IRC.