you do not have permission to access samba share?
['check your smb. conf file with testparm (just in case)', 'restart smbd deamon.', 'wait for a minute.', 'attempt a connection to the Media share with you Windows 7 computer.', "check Samba smbd deamon log in /var/log/samba (if I remember well, otherwise check log files' location with smbd -b | grep LOGFILEBASE)"]