If your only concern is wallpaper, download something like ES File explorer and navigate to your wallpapers from there and set your wallpaper from there. You will have the option of resizing and centering. As a side note, ES File explorer is fucking amazing and no Android should be without it.
It for streaming from PC over LAN? Edit: At least that seems to be the only reason I'd want it.
I got Plex with the free $5 amazon gave out this week and it seems pretty great.