I don't have a Samsung phone myself so I'm no expert but I don't think you can. The A300 does have a ringtone composer though so you can probably use the internet to search for ringtones that you can input yourself. There's a program called 'Coding Workshop Ringtone Converter' that searches the internet for ringtones you want, then converts them into a format compatible with your phone. Was there a specific song you were looking for?