How to correctly decode base64?

Question

Character encoding

Standard methods do not help. Displays ryakozabry, maybe someone came across.
The file is here!

Answer 1

File in Data URI format . At the beginning of the file is a header containing the MIME type and encoding. In this case "data:audio/mpeg;base64,". To decode the file, the header must be removed. For example, like this:

cat code.txt | sed 's/data:audio\/mpeg;base64,//' | base64 -d > audio.mpeg

Received audio file: rghost.net/private/59496310/41202f77f205280ae4b636...
www.iandevlin.com/blog/2012/09/html5/html5-media-a...