[paolo]

All new phones have whats called Digital Rights Management (DRM), it only allows licenced music to be "applied as a ringtone" You can copy music, but the phone can tell where that mp3 came from. YES You can Bypass the DRM restiction with programs such as the Sony Ericsson DRM Packerager. This encodes the file with the digital rights but the DRM is still pretty smart to know "HOW" the file was sent to the phone. Usually, you will NOT be able to blue tooth it over because it can still tell, so you may have to upload it via PC Suite connectivity with a data cable, OR download it via multimedia messaging or WAP from a personal web site (charges may apply for download usage)

My personal favourite is to use pc suite and download it to your phone after you DRM the files. OR you can unbrand your phone (voids warranty) or lastly, you can actually *gulp* purchase the songs legitamately from your carriers WAP Portal / Online Store.