assuming I would manage to
- resize hda4 (make it smaller) without harming the ext2fs in any way
- move hda5 and hda6 "up" by the amount I just shrunk hda4
- create a new hda7 in the free space

Would that bother the player at all ?
(I assume it just reads the partition table and then uses the (standard?) ext2fs-driver.)

If I break the player in the process (e.g. ruining the partition-table or killing the fs on hda4/5/6)
will I be able to rescue it ? Easily ?

Why ?
I would prefer to have all my "applications" on a seperate partition.
And maybe have a small partition with a journaled fs for dynamic data.

just a thought
anti