Some screenshots of a little web app I created to visualise my podcast and audio book listening queue:
This shows files currently on my mp3 player. The width of each file represents it's size, the "window width" being 128mb.
Files that will be copied during the next "sync" are indicated with a red dot. Files are copied according to priority, to fill the player and to have only 3 audio book chapters at any time on the player unless there is nothing else to listen to.
Audio book chapters that have been copied/listened to already are highlighted, as are those that have been downloaded but not yet queued.
The displayed title is taken from the id3 tags if possible, otherwise the filename is used. Dates and redundant "book titles" are removed from the title if possible to maximise the amount displayed, and there is a "hover panel" to display other details.
There's also a pretty calendar to provide a gauge of the age of podcasts in different categories.