This is a bit of a music/video otherwise problem that seems to not have been sorted out. The problem is that when I've got a long piece of either music or video there is no facility for bookmarking where I am within the file. iTunes has support within files that are either Podcasts or Audiobooks, but outside of that you're S.O.L.
[Listening to: Blue Valentine - Tom Waits - Blue Valentine (5:50)]
