I just bought the 3-disc anniversary edition of Rocky Horror and Shock Treatment (anybody remember that one?) the other day. It's distributed by 20th Century Fox Home Entertainment.
This is from there web site. It may not be the right place but it may be a starting point.
If Participant wishes to license any Fox Material, including but not limited to, Material contained in this site, please contact the Fox Clip Licensing Department at (310) 369-3605.
Pain is just an un-avoidable side effect