Not familiar with that site, but if you have a newer phone taht can handle mp3 ringtones, you can browse music at walmart.com and copy the links for their 30 second music samples and text them to yourself. If your phone supports it, you can download the tone and save it to your phone.
Some phones don't work well if the first (or only) thing in your message is a link (it will show up as msg:
http://blahblah.com and the browser won't take it) so put some kind of text in a line before the link.
let me know if this needs clarification. You should be able to figure it out, but some others may not...
Freakin