Call for developer: add-on to play podcasts & audiobook

While waiting quietly for podcasts to be fully supported in Songbird, we could have a quick-win by creating an add-on that would allow to play podcasts and audiobooks with Songbird.

The add-on would simply retain the position in the track when it stopped playing for any reason (pressing "stop", playing another song, closing Songbird), and this for every track that is identified by its genre as a podcast or an audiobook. When going back to play this track any time after, play would resume at the retained position.
Very useful for audio podcasts and audio books

Here is what is needed :

Addon Options
- List of entries to identify podcasts: "genres" which this stop-position has to be retain for (typically: Audiobook, Podcast,...)

Then:
- For each song of tsuch a genr, stopping/pausing for any reason would be retained in the following way (thanks to pvh for the technical bits):
1) Add a custom property for a such a media item which notes the time when the podcast is stopped/paused. (Listen to the media core.)
2) When such a track begins playback, seek to that retained position minus a few seconds.

Additional potential features:
- Ability to reset the retained position to zero by right clicking on a selection

Other additional feature:
- If gstreamer allows it: being able to listen either twice faster (you don't care about the voice tone, but you want to listen quickly) or twice slower (to take notes for instance). this would need a toggling "speed" button (*1, *2, /2), I suppose.

Of course, all these features have been "stolen" from my SansaClip :)

Problem is, I have no developer skills, so I'm looking for someone that would be interested in developing that addon for the community.

Many thanks in advance