What's the best way to get a image media url in xsl?

With 7.4, I have to do following to get a image url.
umbraco.library:JsonToXml(umbraco.library:GetMedia(/macro/src,0)/umbracoFile)/src

Who can give me a better way?


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/75612-whats-the-best-way-to-get-a-image-media-url-in-xsl