First edit your /etc/fuse.conf to allow other users by uncommenting the user_allow_other line at the bottom. (use gksu gedit /etc/fuse.conf)
Next you’ve got to mount the Truecrypt volume with read permissions for “other”. Do that from the command line using:
truecrypt --fs-options="uid=1000,gid=1000,umask=0002" -m="ro" -k "" --protect-hidden=no /path /куда
-m=”ro” = read only
-k “” без ключей
–protect-hidden=no
/path = path to you container
для анмаунта
umount /media
truecrypt -d /путь до файла контенера