Original von Maga
was es noch können sollte:

ext. HDDs (N:\, O:\) ----> syncro ----> Mediaplayer (P:\)

nach dem Einrichten am Besten mit nur einem Klick / Auftrag
Da wäre SyncToy genau das richtige

SyncToy hat folgende Funktionen:

Synchronize:
New and updated files are copied both ways. Renames an deletes on either side are repeated on the other.

Echo:
New on updated files are copied left to right. renames an delets on the left are repeated an the right.

Subscribe:
Updates files on the right are copied to the left.

Contribute:
New an updated files are copied left to right. Renames on the left are repeated on the right. No deletions.

Combine:
New an updated files are copied both ways. Nothing happens to renamed an deleted files.