Linux requires mastery of a new set of skills
from the commercial operating systems. You can learn them but remember,
Linux is not Windows. Google searches will find most answers. The are other
ways to play streaming audio; I've just never needed to find them.
If you look into the menus of your file manager you will find there is a
keystroke sequence to make dot folders visible. It varies with the file
manager: "alt-dot" for Dolphin (which I use, as a Kubuntu user); something
like control and h for Nautilus.
The properties of a file tell you whether it is executable and you can
access them from the right click menu. From the command line (in a terminal
program) the command ls -l shows all the attributes, but that may be
something to postpone until you are more advanced in Linux.
Many people start using Linux thinking it is a cheap version of Windows. It
is far better than that - more secure, more stable, more easily installed
and maintained. No need for defragmenting or anti-virus software and the
price is right: free.
There is a cost however. It requires learning a whole new set of skills to
use it. t They are not very difficult, just different from what you were
used to. If you are willing to invest the time to learn it you will be
greatly rewarded.