Looking for music by Dikakapa (Botswana)

Hi,
You guys here probably get requests for help like this all the time, but here I am looking for some way to download or buy songs by Dikakapa, a group from Botswana. I couldn't find them on sterns or amazon, but they have several videos on Youtube and apparently have been nominated for the Kora awards, so I would think I could find some albums or songs.

Any suggestions?

I am working on a project compiling songs from several countries in Africa that will be played at a conference in February that a friend is helping to organize...representatives are coming here (California, USA) from their countries and the idea is that hopefully they will recognize the music played. I might post the various countries in the general forum and ask for suggestions there too...especially with actually getting hold of recordings...that seems to be the hardest part.

Thanks so much to anyone who can help. I know I'm not a regular here or anything!

-Charlotte