Someone on here has to buy this so that they can upload it here and we can all be happy:
http://www.ebay.com/itm/Swervedriver-Enya-Rat-Cat-On-The-Edge-1992-Reel-to-Reel-Radio-Show-Intrvus-LSN-/200728036009?pt=Music_Other_Formats&hash=item2ebc52c2a9
The seller even put a clip from the recording, it has a snippet of a Swervedriver interview and the beginning of “Sunset” plays towards the end.