Disklavier

I am assuming that since you said that you purchased a 16 MB memory 
upgrade that you are working with a Mark II disklavier.  The EMK1 memory 
upgrade kit allows you to store 1 MB of  music files in each of 16 
memory slots that are named by Yamaha  0-9 and A-F. (Memory architecture 
in Mark II units is slightly different and allows approximately 1.42 MB 
of music to be stored in each slot until a total of 16 MB has been 
stored.)  Loading the songs one at a time  into each memory is easy 
(albeit tedious).  Simply press the "Function" button on the front of 
your disklavier's control box,  and use the left and right cursor arrow 
buttons to navigate to the Song Copy  function.  Press "Enter" and you 
will then be able to select the memory slots and the song that you wish 
to copy into memory from the floppy disk that you inserted in the 
control unit following the prompts on the LCD of your control unit.  You 
can also copy entire disks at once to memory using the Disk Copy function.  

As far as keeping track of what has been stored in memory, I have found 
that a convenient way to do this is to prepare an Excel spread sheet 
that lists all of the songs in each memory slot along with the song 
number in that slot.  Using this, it is an easy matter to navigate to 
the song you are looking for in the memory.  Of course, the Excel spread 
sheet can be sorted and printed out in any number of ways. For example, 
you may wish to print out the Excel spreadsheet of your memory contents 
organized by musical type (classical, popular, etc.) or by artist.  All 
of these things can be done if you prepare the spreadsheet with the 
appropriate columns of data and then use the sort feature.  

Tom