You can get cloudberry jam directly from the source -- Dark Tickle Company in Newfoundland: http://www.darktickle.com/ They also sell other rare arctic berry jams. Cloudberry is known as bakeapple in Newfoundland and Labrador.
On the other hand, Lakka (cloudberry liqueur) is very difficult to find. Only a few companies produce this: Laponia and Chymos from Finland, Rodrigues in Newfoundland, and Mondia in Quebec. As far as I know, none of these are imported into the US. I would love to know of any source of this liqueur here.
Also, just to clarify the name of this wonderful berry: cloudberry, hjortron, lakka, bakepple, and chicoutai are all the same thing -- just being the common American (US), Swedish, Finnish, Newfoundland, and Quebecois words, respectively, for the fruit of Rubus chamaemorus.