You can just add it to /etc/fstab (this will cause it to be mounted automatically at startup). If you specify a mount point outside /media you don't see it in Nautilus anymore.
For those who don't know how to do this here's an example:
If you had a logical volume /dev/sda2 of the filesystem-type ext3 that you want to mount to a directory Music, because it contains your Music, you have to add the following new line to /etc/fstab:
/dev/sda2 /mnt/Music ext3 defaults 0 0
For other filesystems or names you just edit this line.
Then, you save the file, make the mount point with
sudo mkdir /mnt/Music, or whatever you want to name the mount point. If you don't want to reboot to see the change, just once execute
sudo mount -a.