Itunes 12 album art no longer able to paste it in

The Shift-right click > Get Info "back door" to the old-style editors was only available in iTunes 12.0 - there's no equivalent in 12.1. The suspicion is that this was included in 12.0 as the new-style editors were not really finished - substantiated by the significant changes in these between 12.0 and 12.1.

However, all artwork functions (with one possible exception) work fine in iTunes 12.1:

• Click the Add Artwork button, navigate to and select an image file you want to add, click Open.
• Drag and drop an image file from Windows Explorer to the Artwork tab
• Copy the image file to the Windows clipboard, either by right-click copy on the image file, right-click copy on the image in a web browser, or copy within any graphics program, Then switch to iTunes and with the Artwork tab selected press Ctrl-V. Prior to iTunes 12 you could also right-click > Paste in this scenario, but - either by intent or as the result of an unfixed bug - this has been missing from iTunes 12.0 and 12.1.

Also note that there are three cases where the image you select may not be correctly embedded in your media files:

• your media are in a format that doesn't accommodate embedded artwork - typically WAV files. To embed artwork you'll need to convert to another format - Apple Lossless or AIFF if you want to preserve lossless quality, AAC or MP3 otherwise.
• your media files are read only - to fix this, use Windows Explorer to find the folder that contains your files, right-click and select Properties. On the General tab there's a check box labeled "Read-only" - if this is checked, or is grey (sometimes blue), click the box so that the flag is unchecked and the box is white. Click OK, and then OK again when the "Apply changes to this folder, subfolders and files" option selected. Now try adding the artwork again.
• Windows permissions issues are preventing iTunes from updating your media files (there's some anecdotal evidence of a change in this behavior in iTunes 12). See turingtest2's notes on Repair security permissions for iTunes for Windows for advice on fixing this, then try adding the artwork again.

Seems to be only WAV's that won't except artwork . .

I converted an album to Apple Lossless & artwork went in fine. .

I see in the previous reply this has been stated, but, I recently imported a CD with the import set WAV & the artwork is there fine . . Maybe attached in the cd though . ?

iTunes can associate an image from the iTunes Store without embedding into tags. Tracks in .wav format can sometimes benefit from associated artwork, but you cannot attach an image of your choosing manually.

tt2