Can you insert chapter markers for, say, a long audiobook mp3 that you want to break into smaller sections? Is there a way to have links to chapter 1, 2, etc underneath the player, and then have the playhead jump to a specified time?
You could design a UI around this, but with Flash (unless using a real "streaming" server like on YouTube etc.,) you can't seek to arbitrary positions in a long file unless the sound has been loaded to that position. You can only seek within loaded data.
A way around this might be to break the file into smaller pieces, but then you'd have to design a custom UI and also handle multiple sound files (and multiple sounds across a simulated timeline in SM2.) It quickly becomes quite complex.