Had a question about Sound recorder.

About 4-5 years ago I recorded some of my music on the windows sound recorder. I burned it to a cd-rw, but when I played it on a cd player or on my pc, it sounded super fast and weird. The thing is that when I recorded it I didn't convert them to mp3 files. Can anyone help me fix the songs. I can send you one of the songs so you can hear how it sounds.