The only to reduce the reuse is to brand the DVD with the club, event, and dates and times. Even just the Year regularly in there. Club XYZ 2009, club night ABC 2009. Makes these regularly appear. Use them in conjunction with other visuals as background, etc. There are a few threads on this here. You can use this in ingenious ways so the DVD is not as useful afterwards.
"Sin / Cosine are the humble bricks with which one can build cathedrals, as long as there is enough patience and imagination!" Navis [ASD]