err=-120
i was downloading a song and got an error=-120
iPod classic 160GB (Late 2009), iOS 6.1.1
This is taken from a 4 year old post, but may be of use:
I had the same issue and found that the problem was that there was a file called 'downloads' located in the 'Music\iTunes\iTunes Music' folder.
When trying to download, iTunes tries to create a folder in the iTunes Music folder called downloads but unfortunately fails due to this file existing.
If you delete the file, iTunes should then be able to download the tracks.
I hope this helps.