If you want to keep the first 14 seconds and get rid of the rest you could use sound recorder to record it. Otherwise I don't know of any wav editor that comes with XP. You could try Exact Audio Copy . It comes with a small wav editor which you could use to do it. The programs free with no spyware of any sort. One other thought. If you happen to have a Soundblaster Live sound card the software that comes with it installs a wav editor. If this is the case have a look in the Creative group in the start menu.
Did a search here, and found a reference to MUSICMATCH. A great little program that, among other things, can convert any music format to any other music format. This, together with Soundblaster's Wave Studio did the deed.