If I buy Notion 6, I have to buy 'Notion Expansion Bundle Pack' for sound or music play? Or If I buy "PreSonus Pro Bundle - Studio One 4 Professional and Notion 6", there is no need to buy 'Notion Expansion Bundle Pack'? There are some needs to buy 'Notion Expansion Bundle Pack' for Notion 6, If I buy "PreSonus Pro Bundle - Studio One 4 Professional and Notion 6" ?