Part of the change to using Ubuntu involves a change in the way
certain things are done - streaming audio is one of those things that
depends heavily on how the service that's streaming is sending it out
and unfortunately there are some that are locked to Windows and don't
get on well with Linux ( or Mac ). It would help if we knew which
audio streaming service we are talking about as there may be a
work-around.

As for programs - it's easy to find them in Ubuntu once you know, like
a lot of things <lol> All versions of Ubuntu have search methods where
you only need to type in the name of the program you are looking for.
In Ubuntu, click on 'Dash Home' and in Kubuntu click on the 'K' icon
and the search box is in there.

If the program is not there then type the same name into a package
manager to see if it's available for install ( Ubuntu Software Center,
Synaptic Package Manager, Muon Package Manager etc... ).

BTW - It's generally not a good idea to go poking into hidden files
unless you are really sure of what you are doing - same as in Windows
in that respect !! By all means do so if you intend to understand how
Ubuntu is out together but be aware that you can end up needed a clean
install to get out of a serious problem.