Having trouble saving files

Hi guys, just started using Picard to sort my songs out. Working great so far, but I’m having trouble saving some files when I attempt to have the program rename and move them. I’m getting this in my debug log.

E: 17:41:50 Traceback (most recent call last):
File “picard\util\thread.pyo”, line 46, in run
File “picard\file.pyo”, line 210, in _save_and_rename
File “picard\formats\id3.pyo”, line 420, in _save
File “picard\formats\id3.pyo”, line 526, in _save_tags
File “mutagen_util.pyo”, line 152, in wrapper
File “mutagen_util.pyo”, line 122, in wrapper
File “contextlib.pyo”, line 17, in enter
File “mutagen_util.pyo”, line 221, in _openfile
MutagenError: [Errno 13] Permission denied: u"C:\Jimmy Buffett - Why Don’t We Get Drunk.mp3"

Am I doing something wrong here?

Nevermind. Solved. Somehow the files got checked read only. Removed that and it worked fine.