First of all, congratulations on your program, is really nice and works well.
However, I have a specific network solution here, I'm using Load Balancing (with pfsense) and is becoming more and more common today.
Due to load balancing, it won't always upload at full bandwidth all the time, sometimes it just go by using a single Internet line (I have two).
I just need the program to check if is using my (two) IPs, if not, File Uploader could just "balance" the upload stream between those two (or more) IPs.
For example: IP1: 10.0.1.254 IP2: 10.0.2.254
File Uploader just "balance" the upload use on those two internal IPs. The IPs would be entered by user, and "how many of them" would be great too.