Ahaa. Now that different, and I'm sorry to hear that your Mother-In-Law died. I have a grandmother that has Alzheimers. She has no idea who I am anymore.
I don't know of any that can cut wma files but if you cut them before converting to wma then I know one (really good one as well). It might work on a .wma as well, but copy the file first before trying it just incase it ruins the file.
http://home.hccnet.nl/p.luijer/