And to add to that, Scroblr is a Chrome extension that will scrobble anything you listen to on Pandora, Songza, and sometimes YouTube, among other sites. Pretty cool extension
>You'll kick yourself when you think of how many scrobbles you've missed
This is basically why I wanted a browser version of the scrobbler and Scroblr does the job.
The browser extension scroblr has added Deezer to the supported streaming sites that can scrobble your listened music to Last.fm. The other extension for Chrome with scrobbling support for Deezer is the Last.fm web scrobbler.
Hopefully one of these two browser extensions will also support MS Edge soon which has been updated lately with extensions that are similar to the ones for Chrome, e.g. AdBlock Plus.
Deezer has internal scrobbling support as well, but only submits a new song at the end while the usual method is after 50% of the currently played song. Furthermore it does not support the "Scrobbling Now" feature which would show the song on your Last.fm profile while it is playing. Last but not least it seems to have problems with the "&" character in artist names, so their songs do not scrobble correctly and create a new wrong artist profile on Last.fm instead.
Just to prevent misunderstandings when googling "scrobblr": the exact term would refer to an external mobile app for iOS and Android (although that one seems to be gone from the Google app store now) which uses the mic to scrobble anything it picks up: http://www.scrobblr.net/
What the original poster refers to is the 64-bit capable Windows version of Last.fm's own scrobbler software 2.1.37 which is supposed to recognise new 64-bit iTunes versions correctly now: http://www.last.fm/download
Finally there is another external browser extension called scroblr for Chrome and Safari: http://scroblr.fm/
> Share what's been in your constant rotation! You don't have to have a last.fm account to share. Just tell us what you've been listening to!
It's right there in the post. Maybe we should take last.fm out of the title? Also: http://scroblr.fm/ That scrobbles SC.
The desktop scrobbler only scrobbles your local music library on your computer, and the legacy version for Mac (which this is about) supports Apple Music now besides Windows Media Player, Winamp and foobar.
If you want to scrobble from YouTube, you would need e.g. the browser extension Web Scrobbler which supports Chrome, Opera, Vivaldi, Firefox, and the beta Cromium version of MS Edge. For Safari you could try the scroblr browser extension.
Which scrobbler extension do you use? The Last.fm web scrobbler for Chrome offers the option to edit the scrobble while you are playing a track, so you could add a missing album name or change a wrong one. I think scroblr also offers this.
The only way I know to scrobble Groove Music is with a browser extension on desktop, but not on mobile devices:
https://chrome.google.com/webstore/detail/lastfm-scrobbler/hhinaapppaileiechjoiifaancjggfjm
or
"Yes we can!" ;-) On your profile page click on the "More" dropdown link in the upper navigation bar, then on "My MP3s" where you can upload them. There is no progress bar during the upload, so you just have to wait until it's done. They only accept MP3s with a constant bitrate, by the way, and only one file at a time. And if you have uploaded them with the web player, they should also be visible on your mobile device. Scrobbling these uploaded files to Last.fm in the web player only works with the external browser extension scroblr though, not with its internal scrobbling option.
On Spotify this works differently, you only have the Local Files tab in your desktop client which shows the directory with your music files on your computer. You cannot directly "upload" them to a Spotify server, but you can make a playlist of all your local files by highlighting them and save them to a new playlist which also shows on your mobile device. That playlist has the usual "Download" switch on top where you could save them on your mobile device for offline mode, but only those which are available in Spotify's catalogue. Or you simply copy your local files manually to your mobile device, but this is not the same as uploading them to Deezer e.g. to fill the gaps, because that album is not available in Deezer's catalogue.
As this browser extension is an external development, you should suggest this to the developer on his GitHub project page.
There also is another Chrome extension called scroblr which is hosted on GitHub as well.
I don't know if there is a browser extension for Rockradio.com, the one I mentioned for Chrome does not know this site. By the way, that extension is also scrobbling the MS Groove site besides scroblr.
Furthermore this would not offer you free on-demand playback of an extensive catalogue like Spotify does. The other service doing this would be Deezer which is available in many countries, but not in the US yet.