I guess the real solution is to find a new place to live- abuse the advantages of not being a property owner...I can make the hum die down a bit by touching the component metal surfaces, maybe a grounding wrist strap is in order?
Is this still an issue if I use an isolation transformer? As I understand things so far, it's a giant 1:1 where the outlet side is grounded, but not on the component side. If ground is open on the outlet side the isolated side shouldn't see anything different right? By this logic I could just buy one large enough to handle my entire chain...assuming I can find one that doesn't hum.