Movie Maker convert mpg to wmv - audio issue

>-----Original Message-----
>I am trying to convert a .mpg file to a .wmv file so I
>can play it on my Pocket PC with Windows Media Player.
>
>The .mpg fiel came from my Sony DV Camcorder. WHen I
>play this file in Media Player, the audio is fine.
>
>When I lay the .wmv files (I tried several different
>quality settings), the audio is very high pitched.
>
>What can I do?
>.
>