Add minus sign when value is negative rather that relying on the
truncated minute value.  This fixes the minus sign's omission in
the last minute of playback.

Preserve the state of the time display (time elapsed vs time remaining)
with user defaults.

Resync IB, to add the toggleRemaining action to the PlaytimeField.

Use InterfaceBuilder to define the autosave name for the MuxicWindow
instance, rather than setting it in code for the class.

Preserve the main (MuxicWindow) window position with user defaults..

For media where there is no duration information (such as streams),
default the duration to zero so that the time remaining calculation is
meaningful.

Cosmetic whitespace removal.

Make project Xcode 3.1 compatible, and use LLVM.

Allow the user to Toggle the display of the playback time with the time
remaining for the current entry by clicking the time display text field
in the main MuxicWindow.

Cache the current entry's duration as part of mediainfo updates in the
Xmms class.

Changed the playback time's storage and formatting in various places to
allow for negative times.

Subclassed NSTextField to PlaytimeField in order to receive mouseDown
events and re-bind its value, and set the Playtime control to be a
PlaytimeField instance in the xib.

Nothing of consequence.