Just ordered a Beat buddy and that was my next question, obtaining other tracks/songs. Can they be purchased individually or only as sets? ( from users on the forum or from beat buddy)
Welcome.
I moved your post to a new topic thread 
You can download free user-created content which is usually in a one-press format or you can buy premium content as individual songs or as part of a collection and they are in the multi-part format.
You might want to peruse some of the content within this link (in blue font) to new user resources