How do I transfer MiniDisc file to computer

I am using version 2.0.5 on a Windows 7/64-bit machine.

Several years ago I transferred some MiniDisc files to my old computer, but forget how I did it using the older Audacity versions. I have connected the MiniDisc line-out with a twin male stereo lead to the computer’s blue line-in, but how do I proceed to transfer the file to my computer?

Please see this tutorial in the Manual:

Note that you are losing quality by connecting as you are. If the MiniDisc player has a digital out and the computer has S/PDIF in, you should connect that way using an optical cable.