There is new (unofficial) Sublight plugin published on Google Code.

Plugin currently supports two subtitle databases:

Installation is very simple. Just download compiled version from this location: SublightPlugin 0.1 (19 KB).
Copy it to your "%program files%\Sublight\Plugins" directory and restart Sublight. Then click tab "Settings", select option "Subtitles from other sources" on left and set checkboxes on right. When you are done click button "Save and apply changes".

Plugin was tested by us and it works :) We can also confirm that source code does not contain any malicious code (everyone can check this).

Full source code is available and I hope new developers will join project.