The first step is to decide which SCORM player to use. It seems there are 3 current options, viz.:
1. The UC Davis player as updated by Edia
2. The icodeon player with the rsmart integration
3. The SCORMCloud player
icodeon involves a license fee, not sure about SCORMCloud. The UCDavis/Edia version is free, and also has more built-in tracking/reporting capabilities than the icodeon player in Sakai. I don't know much about the SCORMCloud player.
For our 2-6-x Sakai installation, we have this in our .externals file:
edia-scorm https://svn.edia.nl/edia-sakai/edia-sakai-scorm/branches/2.5.3
with these patches to update it for 2-6-x build:
http://source.cet.uct.ac.za/svn/sakai/patches/trunk/edia_scorm_player_poms.diff
Hopefully Edia or someone will soon package this up into a nice clean 2-6-x branch 
It would also be great if anyone had time to update the Confluence pages on SCORM as they're a little out of date wrt the current options.