I would like to sell ringtones and logo for cell phones through my site, anyone has any idea about this?

I've seen tons of these sites... you need ot consider the providers per country, and I think even sign contracts with them .. . not sure though ....
All I know is it seem slike a lot of work, why not try to find a company that can provide all the services offering a fee for you on every sale ?

i reside in india.