I play with smartsprite for some hours and it's exactly what i've
searched. Works perfectly for me with ant integration.
I have just one request about sprite name : could you add an option to
add md5 in sprite name instead of a parameter. Because many proxy will
not cache the sprite because of this, Yahoo performance team
recommends to put md5 directly in filename. For example where i worked
at AirFrance, the proxy doesn't cache images with parameter.