change preview button to play when done.
 

heres an idea, when a download finishes you could make it so when you select the complete one it says play if its audio or video and launch if its zip or rar ect.... it just says preview when its finished and thats strange.
also maybe a clear complete button because sometimes the clear inactive button clears your files that say need more sources even if you still want them there.
you could add an option so that lw will open exe files, that would be good.
how about changing the lw mp3 player abit, its really simple right now, you could make a button to open mp3s with, maybe a tab for the player with visualizations or something cool like that.

thanks,

m.