Custom URL to make WPMU theme & plugins work with another plugin

We are using an LMS (an e-course plugin) and we want to connect the courses to our MarketPress (ie our Products page).

They have suggested:
"1. Ask the WPMU folks if your product can have a custom URL redirection so that once a user clicks the course product, he/she is taken to the LearnDash course page to make a purchase; "

Is this possible as I don't want to include another cart that works with their product if something simple can connect these two.