How do I get all of my songs back after I accidentally deleted them Read discussion for more details?

I presume your talking about an iPod? If you've deleted them from your ipod, you just need to connect it to iTunes and put all your music back on. If you've somehow managed to delete them from itunes, you will need to go back to the itunes store and redownload ALL your songs (if you have trouble remembering all your songs, just go to your inbox and check your itunes receipts) if you downloaded from a p2p file sharing network (e.g Limewire, frostwire) you can just go up to library>downloaded then drag all your songs from there into itunes then onto your ipod.