Hi, I use MMM 16 Premium before that I had MMM 16. According to my experience boxed version got everything therefore after installation nothing.
But download version got soundpackets too but these are not extra, these are to be used with MMM 16. I should say these are included with MMM 16 as download takes time therefore these are available separately.
If you need extra soundpool then have to buy from Magix website or Catooh. You can access from Magix MMM 16 if you want.
Recently I purchased extra soundpool dvds, 9,10,11,14 and 15.