Ringtones and logos can be downloaded to cell phones via WAP browsers built into the phone. Often times, these files are only available via WAP and not HTTP. However, the current Mac OS X beta version of Opera will access WAP sites and let you download these files to your Mac. With Bluetooth File Transfer or third party software like Ericsson Client, you can then transfer the files from your Mac to your phone. Great way to avoid airtime charges or if your phone plan doesn't include WAP.