Nice demo app!
You could become the official Maemo package maintainer and distribute it through the Extras repository. Just one word of caution: before you start working on it, please make sure that redistribution is allowed by the licenses of both the source code and the tunes. I downloaded the source code but couldn't find any license information.

In this wiki page you find full instructions about packaging, deploying and distributing an app in Maemo Extras. If you have questions/doubts, just ask