Tags created from Foobar

[Suth]

Hello,
I have created a lot of additional tags in foobar to track information on classical music. Things like area, mode, movement, etc...
I would like to retrieve this information on minimserver to be able to see it when i browse music. I know how to merge, sort, etc... But i don't know how to get the tag.
My music is on a NAS, and i now need to access it independantly from Foobar.
Thank you for your help