I have read in 'PDA Essentials' magazine that it is possible to convert any PDA/Cellphone to play MP3 music, but the article was very orientated towards Windows. Can I play MP3 on my Treo 600? Is there any iTunes/Mac software I would need to download to do this? What about headphones etc? If anyone has done this I would be pleased to hear from them. Please keep answers simple - I'm not high tech!