jems...
Just realize that no matter what version of the LOR software you want to use you will still need the iDMX. Remember what the iDMX does...it creates the DMX universe, just like the dongle. The software has nothing to do with it. LOR no longer supports LOR1, so I don't even know if you can use the new firmware features of the iDMX, which is far greater than any other DMX dongle. The problem is, the iDMX is expensive. There was lots of talk about at PC version (or DIY version) of the iDMX, but I haven't heard much about that and LOR isn't so keen on giving out information about upcoming products.
As all the guys stated above, there are other types of software out there that allow you to use video and DMX. If money is an option you should probably go that route. However, if you still want to use your LOR equipment with the LYNX stuff, like I am doing, that the iDMX is a must.