Creating playlists on nokia 6230i

Is it possible to create playlists which can be used in the music player
also, What formats can the nokia 6230i play eg mp3,aac.
What format do you suggest .
What is the best converter to convert to this format with.

 

Sorry for double posting but this is very important

 

Wasn't aware the 6230i had any player on it but if you're in the UK, you might want to check this out.

http://www.nokia.co.uk/nokia/0,8764,93835,00.html

 

Yes it is possible but everytime i make one it says invalid track list can anybody give me a good guide