Not exactly what you are looking for, but I find Coffee Break [...language...] to be quite good at honing listening skills. It’s a paid service, but the podcasts, available on the website or iTunes, are free and excellent. Spanish has 4 seasons. It’s not translation transcription, but structured lessons.

There are some paid websites, such as News in Slow [language] that are also decent but pricy.

You can listen to Youtubes w/ subtitles, and pause or replay to check your comprehension. https://www.youtube.com/watch?v=j6LbtYUAg-M is an example

You can do the same on Alba. This is a fantastic site if you like literature. She has a beautiful reading voice, and a large selection of material. You could use it to take dictation if you like, pausing or replaying to catch up or check your work. http://albalearning.com/audiolibros/alba/

http://www.veintemundos.com/en/ is a great site both for learning the language and for becoming familiar with the cultures of the Spanish-speaking world. If you are really motivated, there is a sudy session that goes along with each article, with usually 100+ vocabulary listings and a testing mechanism.

And of course there is always the Bible for both comprehension and spiritual enrichment. http://listen.bible.is/SPNBDA/Matt/1

Have you tried LingQ.com? I think it's a superb resource for learning many languages, including Spanish:

https://www.lingq.com/learn/es/web/feed

There's a wealth of audio texts read by native speakers. You can practice listening and reading and certainly use the text as a dictation exercise. ¡Suerte!