Funny, I've made the same kind of app with Qt and I've managed to package it with the instructions described here:
http://wiki.forum.nokia.com/index.ph...plication_menu

Now I would like to upload my package to the extras repository and I've found some instructions here:
http://wiki.maemo.org/Uploading_to_Extras

However it seems to require files I don't have (.changes and others).

I've managed to have the sound working (although with a little hack) using Phonon, so if you still need help let me know.