mp3 bookmarking in VSH

The gist of my plugin is to add bookmarking support for audiobooks in the vsh. I'm tired of searching for where I left off after a cold boot or listening to other music. :) yeah I'm a little lazy..

I'd like to save the current track and position of the mp3 playing in the vsh. So basically I'm hoping someone has come across functions to interact with the currently playing mp3.

The rest of the plugin has been created so this is my final hurdle, so any help is greatly appreciated!