Raspberry Pi samba nas - Ingen behörighet

Jag följde denna tutorial http://www.youtube.com/watch?v=jr2Jz8km2BU.

Jag kan se filer på den men jag har inte behörighet att lägga upp filen eller att göra mappar.

Settings:

#======================= Global Settings =======================

[global]
workgroup = WORKGROUP
server string = raspnas server
netbios name = raspnas
dns proxy = no

### Logging
log file = /var/log/samba/log.%m
max log size = 1000
syslog = 0
panic action = /usr/share/samba/panic-action %d

### Authentication
security = user
map to guest = pi

#======================= Sharered Folders =======================

[media]
path = /media
guest ok = yes
guest account = ftp
browseable = yes
read only = no
create mask = 0777
directory mask = 0777
writeable = yes
admin users = everyone