I've got a similar issue, but for me it's python-conic. I've tried to apt-get it, but it's not showing up. Is that in extras, or do I have to add the devel repository. I've not yet added the -devel repository, just installed the deb directly with dpkg... I found a few other packages are installed that should want it (python-evolution being one of them) that complains that conic is missing. Not sure how that happened, as my N900 is pretty pure. The only thing I've installed outside of Extras was pidgin, which I installed without major issue via grabbing the debs and using dpkg.

UPDATE: Apparently python-conic is still only in the devel/testing repositories. Something to consider is that since you depend on it, it has to make it out of devel/testing as well before your app will make it out too.

Congrats on getting this going though. It's a great app and works well. Btw: I've found that if named properly and launched from the file:\\ browser, videos and sound play via the media player. (I re-named then with a 3gp extension, since that was the video type sent, played like a charm.)