sigh... you shouldn't own a gp32... :rolleyes: not to offend you, but did yo BOTHER looking? good goo...there is prolly a converter of some type, but it might be to complicated for you <_<
there is an ogg player which supports the winamp skins...
for wma use wma/mp3 player
for mp3, well, there are many around..
for ogg you also can use yogg
for mod/s3m/etc. mikplay
...