Hi.

Nah. You really can't have a hard link to a file on another filesystem. They don't allow it because it creates problems with keeping everything in sync. A symlink would work though.

Is it really this hard to understand, or didn't I choose the right words?
The whole point of my post was that you can _always_ create a hardlink to an existing file, even on an otherwise full disc, as long as there are free inodes. You don't need a link on drive1 to a file on drive0 because you can also create the link on drive0 itself (remember, the player software finds the files it is looking for, no matter if they are on drive0 or drive1).
So if you have a full drive0, which (among others) contains the (fid) files 1100 and 1101 (with *0 being the tag file and *1 being the data/mp3 file), and have drive1 with some space left, and both drives have a few inodes still unoccupied, for a copy of mp3 file, with its tags being free to manipulate without changing the tags of the original, you can

1. create a hard link on drive0 (named 1111)
2. create a copy of file 1100 named 1110 and place that copy on drive1
   

This way, you have not used any additional space, except for the tags. You obviously need to store the tags twice because otherwise, you couldn't change them without changing the original, right?

Was this description clear enough now?

cu,
sven