How to get album art? - Apple iPod touch

1. Click on "Advanced" which is found at the top of the screen. Select "Get Album Artwork" from the drop down menu. It will ask you "Are you sure you want to get album artwork?" Hit "Get Album Artwork". Before you do that, you can select "Don't ask me again" if you don't want this to pop up in the future.
2. Wait until it is done searching for the artwork. A window will pop up saying that it either found all artwork or they didn't. If they did, then great, your done, plug in your iPod and start jamming. But if they didn't, you can still jam away, but check the song title, album name, artist, and genre to see if you got it typed in correctly. Type in what they are supposed to be and try again.
3. If they still can't find it, then you can add them manually. Look at the link below to find out how to do it manually.

1. Find the artwork for the album on the internet. Try using Wikipedia. Click on the artwork to get a larger image. If you can't find it there, I'm sure you can find it using Google images. Anyway, once you find it drag it to your desktop. Make sure it is on there before you continue.
2. Next, you need to highlight the songs that are in the album you are getting artwork for. To highlight multiple songs, click on the first song and then while holding the shift key click on the last song. To highlight multiple songs that aren't grouped together, click on all the songs while holding the command key on a Mac and ctrl key on a PC.
3. Now go to "File" then "Get Info". A window will pop up asking you if you want to edit multiple items. Click "Yes". Another window will pop up labeled "Multiple Item Information". You will notice a box on the right hand side of the window that says "Artwork". Click and drag the artwork that is on your desktop into that box. It should appear there. When it does, select "Ok".
4. When it is done processing, plug your iPod into the computer, sync it, and take your iPod out to start listening to your improved music.

The music files come from all kinds of sources, so some of the songs may lack complete information, like lack of music album artworks. And the post will introduce you how to add album artwork to iTunes/MP3 files/iPod touch on your Mac computers.
Leawo Tunes Cleaner is designed as professional iTunes cleaner program that could act as both album artwork finder and duplicate remover for iTunes music files and other music folders. Download Leawo Tunes Cleaner ' Leawo Tunes Cleaner for Mac and install it.
Step 1: Open Leawo Tunes Cleaner
Kick off Leawo Tunes Cleaner and click Start to Clean iTunes option. This album artwork finder would start to scan your iTunes music library immediately.
Step 2: Start fixing
All results are displayed after scanning. Click the "Fix All" button to let this album artwork finder download and add album artwork to iTunes music files.


For more detail, check: How to Add Album Artwork on Mac

There are two methods to show album art.
Method 1: Via Apple iTunes For this you need to provide your iTunes Store account info and login to it. Once iTunes has your user id listed and verified you can right click any song and select Get Album Artwork. itunes will download it for you provided the Artist, Song Title and Album name are correct for each song.
For automatic download goto Edit > Preferences > Store. Check mark Automatically download missing album artwork
Method 2: Manual Google album art for your tracks and copy the image file to windows clipboard. Select the song to which you want the album art. In the Album art window on the bottom left of iTunes window you should see a blank space. Right click that empty space and select Paste