I'm not that familiar with Soundcloud to know if this is just a limitation of them, or something that could be implemented. I didn't see a way to get this to work, so if there is a way, please let me know.
I'd love an ability to pause the playing track, and then resume where I paused. There should also be the ability then to start the track from the beginning, or perhaps some slider bar that would allow you to 'fast forward' to the particular time of track desired.
As it works now, you can play or stop, and then when you play again, the track simply starts over.