Avoid using .wav as an audio format and make sure all artwork is embedded. I have two scripts that can help with this, CreateFolderArt and EmbedFolderArt.
The scripts have a slightly different purpose.
CreateFolderArt ensures that every album folder ends up with a Folder.jpg image which is the art that iTunes already knows about. Side effects are that if artwork has been updated in iTunes the folder art should be updated also, and if any track from the album doesn't have embedded artwork it gets embedded.
EmbedFolderArt was actually written for someone who already had various artwork images stored in the folders and wanted them added to their tracks, but not if iTunes had already downloaded a better quality image.
You should be able to add these tracks to any other library and all of the tag information will come too.
See also Backup your iTunes for Windows library with SyncToy. This provides a method for backing up the library properly. You can use the same tool to restore the library into your new computer when the time comes.
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