[phool]

Would it technically be possible to get this running on a synology NAS?

Well, kinda
Dunno if already a java version is available for your Syno box, but if yes, i guess it would work.
Only in commandline, of course, so no GUI. But scraping & co is all possible on commandline, see here
(We might need to tweak the TMM updater, and the mediainfo detection, but should be all possible)

Ah, I see. For some reason I was under the impression that this could be run from within your browser and got awfully excited about the prospect of having a nice in-browser UI to do all my media scraping and such. I may investigate a little more when I have time and see whether it is possible getting it running and how the command line fairs though.