Probably not the 4Gb SD card memory as the v2 Default Content only takes up about 691Mb of space (provided the Recycle Bin or Trash has been emptied).
Instead of using the SD card, you could copy the BeatBuddy_Default_Content_2.0-Project_SD_Card_backup folder directly to your projects folder: /Volumes/Mac HD/Other users/persist/Documents/mybeatbuddy.com/BBWorkspace/user_lib/projects/BeatBuddy_Default_Content_2.0-Project_SD_Card_backup and open the project in that folder.
Maybe now is a good time to get acquainted with some of the reference documents: resources