Over the years working with various editors, I collected usefull music pieces from wikimedia commons which are all public domain
If officially approved, I'll post the list here, which does not include the download links themselves but the links to the respective wikimedia commons pages -so everybody can check the PD status (which could change over time) - along with a short description each.
I am asking beforehand because after reading the forum guidelines I am not sure if publishing links to non-Trek -topic sites is approved.
I think it's fine to post links to anything unless it's like a porn site or something, or completely irrelevant. If there's some justification then it's fine. You can probably even advertise your personal site and stuff in your sig as long as it's not a porn site, for that matter, since it tells about you.
I for one would be very interested if you posted the link.