Go to iTunes menu EDIT > PREFERENCES > ADVANCED Tab
you may find iTunes Media file Location box is blank(sometimes this happens after an update).
If that is the case, click the change button and link it to your iTunes Media Folder as follows:
Win 7 C:\Users\<username>\Music\iTunes\iTunes Media
WinXP C:\Documents and Settings\<username>\My Documents\My Music\iTunes\iTunes Media
However,if your Media Folder is not missing from the Advanced tab, proceed to repair your QuickTime:
Control Panel >
Add n Remove Progrms(XP)
Programs n Features(Win7/Vista)
highlight QuickTime, click CHANGE then REPAIR
I clicked on File, Add to Library, and then when i choose the song, it doesn't go into iTunes
Find the file icon. Right-click it and choose Open With > iTunes.
If the file is compatible with iTunes, it will be added to your library and will start playing.
If the file is not compatible, iTunes will "error silently," i.e. do nothing.
Try it and tell us which case you get. If it is the second, provide details about the song file.
Perhaps these are permissions problems...
Right-click on your main iTunes folder and click Properties, then go to the Security tab and click Advanced. If necessary grant your account and system full control to this folder, subfolders and files, then tick the option to replace permissions on child objects which will repair permissions throughout the library. This is the XP dialog but Windows 7 shouldn't be too different.
I have this problem, trid to drag and drop songs in to the music folder and tried to add file to library but it doesn't import. When I right click on the song and ask it to play in iTunes it plays fine.
I've checked and the media folder link is ok and I've repaired Quicktime but still not working.