Toni...I was just coming here to let you know that wrp is not a disk format, but I see you figured that out.
There's actually a few different warp utils. Again, this link to Codetapper's site will provide you with the neccessary tools.
Just an aside I have been meaning to mention: in addition to MFMWarp and NomadWarp, that have become mainstays in transferring Amiga originals lately, they are not the same as the old school Warp util, which was how cracked warez were spread before DMS existed. After the original Warp came the hacker-improved NibWarp, which was a predecessor to (I think) NomadWarp. It's a long, interesting story which I may go into one day when I am not in a state of sleep-depravation...