build for leopard, scrollable album view, bugfixes

keyboard shortcuts added for compatibility with mira
iTunes control menu and shortcuts added
song rating in album view improved

reads cover images from mp4/m4a files
bug fixes

song rating added
better layout of album view especially if album is a compilation
speed of loading and switching albums improved by caching tag infos
buttons for switching albums added
application closes now in fullscreen mode
iTunes controller improved
menu item for removing caches added
color scheme adjustments
bug fixes

ignores folders without song files
growl notifications replaced with custom ones
better layout in album view and compact table mode
deminiaturizing window if app becomes active again
keyboard shortcuts added
bugfixes

now also handles mp4, aif and wav files
better album and artist name display
large album and artist names in fullscreen mode
better fullscreen album display for albums with many songs
some keyboard shortcuts added