At one time CyberAlien
former developer of SlavaNap had coded a small program for testing purposes that would allow a person to run 2 instances of WinMX at the same time. A tool like this would be very handy right about now to search both 2.6 and 3.1 networks.
If it wouldn't get abused? As I recall back in the days I used to run 2 instances of Audiognome to search both of the napster clusters