EasyListening is designed for really simple song transfers between iTunes on Macintosh and a Sony Ericsson mobile phone.
Connect your phone with an USB cable, select a playlist or a couple of songs in iTunes and drag it to EasyListening.
Select if you want to copy or synchronize it to the phone. The songs are transferred and thats it. No more hassle with strange invisible files, terminal hacks or scripts.
Demo version for Mac OS X 10.4 (10.4.11 recommended) or later, including 10.5 (Leopard).