@Override
    public AudioData loadAudio(AudioKey key) {
        return loadAsset(key);
    }
Clones the asset using the given processor and registers the clone
with the cache.

@param <T> The asset type
@param key The asset key
@param obj The asset to clone / register, must implement
    {@link CloneableSmartAsset}.
@param proc The processor which will generate the clone, cannot be null
@param cache The cache to register the clone with, cannot be null.
@return The cloned asset, cannot be the same as the given asset since
    it is a clone.

@throws IllegalStateException If asset does not implement
{@link CloneableSmartAsset}, if the cache is null, or if the
processor did not clone the asset.
jme3-core/src/main/java/com/jme3/asset/DesktopAssetManager.java