Temporary URLs still on media

Hi,
I installed WP.org before editing DNS, so it was in a temporary URL. Once I have imported my WP.com blog content to my new WP.org blog, made the appropriate settings and redirections, almost everything worked O.K. But, the media published in the content remain with temporary URLs.

See, for example, the image URL in the following post:
https://gustavodandrea.com/2011/05/24/aniversario-de-seis-anos-do-blog-forense-contemporaneo/

I don’t know if it’s safe to let the temporary URL as media URL. I would like to change it, but I don’t know how. I thought about using the Share & Replace plugin, but I’m affraid of making something that would make my blog not work.

Thank you.
Gustavo