Windows 7 Turn off read-only for music files

[gdkile]

I can not turn off read-only on my music files which are on a detachable hard drive. Apple iTunes will not let me customize the titles, description, etc since the files are read-only. I remove the read-only in Windows Explorer, for both the directory or even the individual song, apply and exit and Windows 7 turns the read-only back on. I am running as admin and am the only user for this pc.