Hi xtacbyme - I'm not in front of a PC but I'm sure someone else can point in in the right direction on settings etc in MC.
Last.FM
Last.fm configuration:Tools > Options > Services >Last.fm configuration.
To enable scrobbling: Right-click on the two words entitled
Playing Now in the left column listing> Scrobble 'Listening To'
or
To enable scrobbling: Player (menu item) > Playing Now (menu item) > Scrobble 'Listening To'
Note: If you ever get the message that Last.FM doesn't recognize you as a subscriber it is because you didn't subscribe or you forgot to extend your subscription. Go to the Last.FM web site and pay the $3.00 per month fee, it is well worth the price.
After you have paid your subscription fee check to see that Last.FM has recognized what you wanted done. Log on to your Last.FM account on their web site then look underneath the "Hi [your name]" greeting. You will see "Your profile | Settings | Inbox". Click on Settings and Last.FM will take you to another window with several tabs:
Account / Website / Email / Privacy / Password / Subscription / Data / Applications
Activate the Subscription tab and verify that you have paid your subscription.
Activate the Applications tab and verify that you have JRiver Media software connected to your Last.fm profile.
Chances are this is never going to happen but if you have paid your $3.00 per month subscriber's fee and Last.FM doesn’t recognize you as a subscriber, then you may have to use this fix. Don't worry about this happening to you but you'll be thankful you have this fix should you need it.
The usual precautions apply when using Regedit.
Go to the following Properties folder in your registry:
HKEY_CURRENT_USER\Software\JRiver\Media Center 15\Properties
When you reach that particular Properties folder look in the right pane of Regedit.
Remove all settings that start with "Last.fm".
Then restart your computer and try again.
Explore Last.FM's website, many features. They are a class act, as is the JRiver Media Center.