[Roy Dennis]

You could try this idea: find the .lst file you want to change using windows explora, probably in C:/MTU/Microstudio folder, now rename it to a .txt file example as in your case 1.lst rename to 1.txt

Now right click on it and select open and it should open in notepad if it doesn't right click again and select open with, then choose notepad. When it opens you should see something like this:
C:\Nicki Minaj & Rihanna - Fly (Clean version).bin
C:\Adele - One & Only.bin
C:\Nicole Scherzinger - Wet.bin

Then from the top menu select the edit tab then Replace, in the next dialog where it says find what type C:\
In the replace box enter the letter for your drive where you moved these files to, example G:\
Then press replace all, this shoud change all the directory leters as in this example:
G:\Nicki Minaj & Rihanna - Fly (Clean version).bin
G:\Adele - One & Only.bin
G:\Nicole Scherzinger - Wet.bin

Now from the file menu select Save.
Now rename the 1.txt file back to 1.lst

Now open microstudio navigate to the file and see if it now finds your files.