[global]
workgroup = WORKGROUP
netbios name = my-pc
dos charset = 866
unix charset = KOI8-R
browseable = yes
wins support = no
security = share

[Music]
path = /tmp/dir
guest ok = yes
browseable = yes
read only = yes

Ваш самба-сервер пингуется с машины-клиента? telnet samba-server 445 ?