I know a guy who suspended his CD player on bungees from an aluminum ladder stretched across some crates several years ago. It didn't sound very good, sucking the life out of the music. Later on he scotch taped aluminum foil all over the walls, so that should tell you something, even though that's another story.
Ironically he jumped into the industry making racks and stands using stacked up blocks of Sorbothane inside the completely enclosed shelves that couldn't be opened without destroying them, compressed under the weight of the component, later with threaded bolts through the shelves to compress them and prevent the stacks of Sorbothane from buckling, which had caused some shelves to collapse (structural engineering 101) and outraged early customers. As he made the exterior cosmetics fancier and raised the prices through the proverbial roof to become some of the most expensive on the market, the performance improved some but was still fundamentally compromised, as Sorbothane is intended for use in impact absorption, not steady state vibration control and isolation, not to mention the constraints on movement of the platforms mostly to the vertical direction.
Don't do it. You probably won't like it.
