U can't is gone
You cant.
You have to buy it again.
Once it's deleted it can't be added
The wii is able to download songs from the in-game store and the files either on the wii or on a SD card, if the files are on the SD card they will be transferred to the wii in cache memory and deleted from the cache memory when the song is over.
Ok, I deleted my Wii's mario game file, but you can't retrive it. However, if you find someone who has a higher level/close to you, you can switch files, or copy. In Super Mario Galaxy 2, I used my deleted file for my brother's, and I used my brother's and put my face on it. So now my brother has the one with 0 stars but you can do that, if that helps.
Transfer the files to your PC and then transfer them back to where they were before.
If you want the deleted files back from Windows hard drives, firstly you can check the Recycle Bin to see if the deleted files are stored there. If you have emptied the Recyel Bin, then you will need some data recovery tools to help you recover the deleted files from hard disks.
If you've deleted your Windows 8 program files by mistake, you can do a recovery and put it back to factory settings. Make sure you backup your files before doing so.
If you have deleted files on a computer, but need them back, there is a way to retrieve the files. Once a file is deleted, it will go into the computers recycle bin. Once the recycle bin is open, there is a button at the top to restore deleted items.
No - system restore is designed to 'roll back' your computer to a point in time before a problem occurred. It will undo installations, but not restore deleted files.
I have a wii and YES it can be!
you can re-download it for free on the shop channel (for dsi and wii)