Long time no see @
Uatschitchun 
I know that your music collection is vast hence wanting to avoid a rescan, but rescanning is also the simple way AND you could upgrade to v18 too. You would possibly want to export art and NFO first as well of course.
But, unlike politicians, I will try to answer the question of how to move your source without rescanning.
EDIT: Better solution is as suggested by Troggy
https://forum.kodi.tv/showthread.php?tid...pid2791413 I never knew Kodi could do that
Ignore my data messing suggestions below!
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It entails editing the database, so take a backup etc. (and what follows is for expert users only, don't complain if it goes wrong and I am writing theoretically I have never done this myself). There are a few places to look:
Path table
strPath field will need modifying. There is no way to correct the hash value (of path and timestamp), so I believe if you ever later do hit "Update Library" it will see the hashes as mismatching and rescan everything.
Art table
If you have any local art (e.g. in album folders) then the url field will need modifying. That will be obvious. If you have art embedded in music files then url filed will also need modifying, but less obvious to spot as it is encoded and could look like
image://music@N%3a%5cMusic%5cLib%5cSoundtracks%5cJohn%20Barry%5cMoviola%5c01%20Out%20of%20Africa.flac/
In v18 the source and source_path tables will also need modifying.
The sources.xml file (in userdata folder ) will also need editing
Good luck!
