There seems to be no shortage of "classical ringtones" results on Google, and yes, they all want you to join.
For now, our recommendation is to go to the website of your cell phone service provider (like T-Mobile, AT&T, Sprint, Verizon) or cell phone manufacturer (Nokia, Motorola). If your phone has web access, you can probably shop for classical music ringtones right from your phone.
Do you have an iPhone? Some of the pieces in the
Kickass Classical Top 100 iMix come as ringtones too.
Please do us a favor Bill, and let us know what you find out!