LSO Authoring Environment Content Player

Hi Friends...

In order to import courses from an External Training Provider, does one have to change the URL Settings for the Content Player in IMG?

OR

Should the course imported from a third party, play automatically using the 'Play Learning Net/Object' Functionality in Authoring Environment?

If the 'Content Provider's ' Content Player shows the following message, each time a course is played--

ERROR MESSAGE---

"Player is unable to communicate with the LMS. Your session needs to be closed"..

Any clue why this happens?

Would greatly appreciate a reply.

Thanks

Tania