Am 07.06.2018 um 14:42 schrieb Michael Jarosch:
  Am Donnerstag, den 07.06.2018, 10:19 +0200 schrieb
David Adler:
  That would violate the "without downloading
(full files)" objective. 
 Why not using nfs, then? 
Because of:
Am 06.06.2018 um 16:26 schrieb Christopher Arndt:
  No. Adding/Changing comments on a MP3 file in many
cases requires
 inserting data at the start of the file, which of course makes it
 necessary to move the following data and to re-write the whole file. 
Chris