One of the best places to access additional ringtones is from the websites of phone providers. T-mobile, Verizon, AT&T, Sprint and U.S. Cellular are among the phone services providers that offer ringtones and/or special ringtone apps through their websites.

T-mobile offers several ringtone options, including comedy clips and farm animal sounds. T-mobile customers can shop for personal ringtones through the company's online store.

For a low fee, Verizon customers can also access the company's Slacker Radio feature, which offers unlimited access to ringtones and ring back tones numbering over 100,000. An additional feature changes the tone each time a person calls. A customer shops for tones by logging in with a Verizon User ID or mobile number.

AT&T customers have several ringtone and other personalization feature sources, including Google Play for Android, BlackBerry World for BlackBerries, and Windows Marketplace for Windows. Sprint customers can choose Sprint Music Plus on their phone's main menu to access the ringtone store, where they can search by artist, title, keyword or music category, and then purchase and download the music or sounds to their devices.

Those with U.S. Cellular plans can utilize several of the same ringtone banks available to Verizon and AT&T customers.