I am not sure what exactly you are asking? I think you could distribute them yourself, by signing up for a service that allows you to receive Premium SMS (that's what they are called in Germany) and send WAP-Push messages. The established distributors also try to put the application up on the portals of the mobile phone providers or popular portals (like Jamba in Germany). Then they do a lot of TV advertising.

I was hoping that there could be other ways to sell a mobile application, though.

Just looked at your homepage, I am impressed by the number of Open Source projects you have done...