By far the most requested feature on the new Magnatune site is the ability to jump around a song.
I've now added that feature.
When you play a song in an album, you'll see the time elapsed displayed in this new way:
If you click on a dot, you will jump to that precise time in the song. There are also "hover tips" as you hover your mouse over a dot, showing you the time at that point before you click.
This feature seems to work on all platforms, except if you are using a Flashblocker on Google Chrome, due to some bugs in OGG audio file support on Chrome. Firefox with a Flashblocker does not have this problem.