Not exactly, you can download from a set number of hosts for each download, (the software governs this based on your internet speed, I think the top is 14 for a Pro version, but dont quote me on that) That is probably the most limiting factor for a high speed internet connection getting a particular file.

If you are downloading 30 different files, potentially from 14 hosts each, you could get a lot higher speed.

However why so eager to download so many at once? there are a lot of psuedo Nazi's who watch their downloads like a hawk, browsing the machine of the person downloading from them, if they think you are not sharing enough, or leaching (IE download several files from them with little to offer in return) they will can your connection. Probably only worth starting so many seperate downloads just before knock off, or a weekend, that way you will not incure the wroth of these "psuedo Nazi's" to often

Be patient you will get what you want!