jwheadrick, thanks.
Tried that in Mountain L.
Doesn't work. I wrote the following in Terminal:
SEs-MBP:~ Dad$ sudo chmod 777 /Users/Dad/Music/iTunes/iTunes\ Media/Music/2012-11-11\ iRip/Alice\ Deejay/Who\ Needs\ Guitars\ Anyway\?/Better\ Off\ Alone.m4a
and gives me the following message:
SEs-MBP:~ Dad$ 123qwe
-bash: 123qwe: command not found
Any ideas what would be the right one for ML?
(BTW, after reading about the problems with permissions, with other songs I just went to the info and changed the permissions from there, but with this particular one also the lock in the info is grayed out).
FOUND THE REASON: instead of Cmd+I I was clicking Option+Cmd+I (for a general info, for several files) and THAT gave me the grayed out lock, but when I did just Cmd+I could change permissions.