Hey @Papaya , you should not have to create songs from individual midi files. Each package you purchase from the Library contains a song folder file that you can import into your BB Manager. All songs are imported automatically containing all beats and all fills for the particular package. Then you can preview all beats and fills and combine them into your songs using drag n’ drop. Please refer to the PDF manual that comes with each package. Also, on product pages in the Library there is a player that contains all beats. It may not contain all fills (in order to save time), but it contains all beats.
Thank you for getting the beats!