my bad, conversion after burn!

my primary player is realplayer. before update the files were ripped as m4a files. since up-date they are now mp3 files.

when i download an album full of songs, in the "share" folder there are all different types of file ext. mp3, wma, m4a etc. also different speeds. when i add them to library & burn to CD it converts all to mp3 192kbps.

Question: is that part of id tag? i'm still clueless about those.

P.S. i'm still gonna peek at "hello".