Unable to Copy Files from Network Volume

No solution to my particular problem - other than I've slowly been re-copying the files in question (i.e. the files that play fine through Plex, and that I can copy at will using my Win 7 laptop, but that the iMac and MacMini can't copy, although downloading them to either Mac via the Synology web interface works fine).

To address your question -- I haven't tried the iTunes feature yet - my plan is actually to use MediaRover to centralize my iTunes library, although I've not done it yet.

Probably not the main answer to your question, but I've been using UltraCopier to copy my video files to the Synology DS1511. Ultracopier works like the Windows-only program Teracopy and worked flawlessly to transfer over 1TB of video files from a D-Link DNS-323 NAS to the Synology. It wasn't fast, but it got the job done. I suspect that if your goal was just to copy the iTunes media files from your Mac to the Synology NAS, that Ultracopier would be a great tool. I'm not sure of the process with specific respect to the iTunes server feature of the NAS.

So bottom line - I haven't used the iTunes copy capability, and don't plan to, unless the MediaRover method fails. And I also haven't found a solution to my posted issue of inability to copy certain files from the NAS to my Mac (iMac or MacMini) desktops due to faulty permissions. Sorry that's probably not more helpful. Good luck to you as well!

Yep. That's what I had to do. I used the DSM software to delete the files from the DS1511, then I recopied them using Ultracopier (freeware) back to the DS1511. The newly copied versions didn't have the permissions issues, and I was then able to copy them back to the Mac machines (my iMac and my MacMini) without a problem. In my particular case, all I can figure out is that my region had a few power outages while the data transfer was occurring (it was 2TB total of data to be transferred from the DNS-323 NAS to the Synology DS1511 -- took a few weeks) - any of the files that were partially transferred seemed to have the issue (I obviously had to go back and complete the copy process to get those files on the new server). Any files that were copied and not interrupted by a power outage didn't have the issue.

Bottom line - the tedious method of delting the files in question from the DS1511, and then recopying them back to the DS1511 solved the issue. Even if I didn't do that though, I was able to successfully "download" the files with permissions issues from the DS1511 to the iMac/MacMini using the Filestation DSM software and web interface, which would have been another workaround.

To follow-up on another Synology DS1511 question raised in this thread -- I'm also using MediaRover without an issue, and so far it's working great. The built-in iTunes server on the DS1511 worked fine, but it didn't seem to have all of the syncing functionality that MediaRover offers. I have all of my iTunes music and playlists copied to the DS1511, and then all computers in the house have MediaRover installed. All computers (MacMini, iMac, Win7 Laptop, WinXP laptop) are syncing with the music folder on the DS1511 (managed by MediaRover). If I make a playlist change or create a new playlist on any computer, it is synced and shows up immediately on the other computers, with an appropriate name so you know which computer created the playlist (i.e. if I use iTunes on the Win7 laptop to create a new playist, the playlist will automatically sync with the other computers, but will show up as [Win7laptop]"name of playlist" to avoid confusion if playlists have the same name, but were created by different computers). Really a great solution that I can't believe is free.

And, to throw out additional info on an unasked question -- I'm using the DS1511 photo server and audio servers (the Apps are free on the iOS app store) and they seem to be working great, but only on my local LAN so far. To get remote photo and iTunes music access I'm using Plex Media Server, and the Plex iOS app which has worked flawlessly, to not only access the videos on my DS1511, but also to have my entire photo library and iTunes music library available anywhere, over WiFi or 3G (or the new ridiculously so-called "4G"). I can stream my entire iTunes music library to my iPhone anywhere, and I can view my entire photo library anywhere. The Plex iOS app isn't free, but it's cheap, and the media server software is free. Anyway, thanks to all for contributing some DS1511 and Mac knowledge. Cheers!

Just downloaded File Multi Tool 5 (heck, for the photo date correction capability alone it's worth a few bucks). Did you just drag the files directly from your Synology Diskstation into FMT5 and process to "Remove creator and/or type code"?

Follow-up to above - I downloaded File Multi Tool 5. Opened my Synology DS1511 in Mac Finder - highlighted and dragged the files in question (the ones that won't allow copying back to the Mac desktop) into FMT5 - ran the operation "Remove creator and/or type code" and then closed finder, reopened Synology in Finder. Changes didn't appear to have taken effect. Then I ran "Force the Finder to update its information on the file(s)" in FMT5 to see if maybe that would do the trick. Nope. Files still won't copy back to the Mac desktop.

Any suggestions on how you got it to work for you? Thanks in advance!