Okay, back from dinner
I will give you some general directions, as I am short of time right now. Linux is for fun, and getting it to work is part of the experience! If you can't get it to work though , please let me know!
- DON'T use NTFS with the Dockstar. It is incredibly slow (less than 5MB/s). Use ext3 or ext4 instead. I use ext4, and I can copy files with about 25 to 30 MB/s over GB-Lan
- after pluging in the HD and formatting it to a proper file system, mount it to a place most convenient for you, e.g. 'mount /dev/sdb1 /home/data/music', where sdb1 is partition 1 of your HD.
- tell debian to mount the HD there every time it reboots: edit /etc/fstab with nano, and fill in e.g. '/dev/sdb1 /home/data/music ext4 defaults 0 2', where sdb1 is again your HD. Change places and names accordingly
- in my case, I installed Samba with help of the many howtos on the net, and I can sync my HD over Windows now. Subsonic will then use any new folder you put on your HD without hassle.
If you need specific help, I am glad to assist you!
Subsonic is really a great piece of software.