Some Instructions to run from your (WINUAE) harddisk:
    

Put the Speed#81 directory and included files in the same directory on your Harddisk

Memory is an important factor. Certain demos need more chip RAM or fast RAM than a
standard Amiga 500 provides. Make sure you have some extra memory enabled (on board)

Boot the file called Speedloader 

Enjoy Speed#81 Pack & Magazine!