ATutor does not have a SCORM runtime environment with which to play the interactivity of a SCO. It's on the drawing board.
Assuming the SCO you are running was created in a current authoring tool, it should still import into ATutor, but without the interactivity. There are a number of examples in the Play Here Course demo on the atutor.ca site. Although the jar files should install into ATutor, you could upload them using the filemanager, and link them into you page using applet, or object.
Here's the markup from one of the applets in the commonly found business startup tutorial.
<applet code="org.jelsim.applet.ProgressApplet.class" archive="progress.jar" width="1" height="1">
<param name="loadApplet" value="cdcsimpletf" />
</applet>
<applet code="org.jelsim.applet.JSApplet" archive="jscore.jar,BizStartup.jar" name="cdcsimpletf" width="548" height="414">
<param name="isPanel" value="X" />
<param name="loadFile" value="cdcsimpletf.jsm" />
<param name="modelClass" value="org.jelsim.models.bizstartup.BizStartup" />
</applet>