There are many ways to "do radio".
You can go "over the airwaves" and rent airtime over European
mediumwave and shortwave transmitter stations.
KREBS TV in Latvia will rent you airtime on their 100 KW 31 metre band shortwave transmitter for under EU 60 per hour.
Or you could set up a clandestine pirate radio station on AM or FM
and broadcast into London and the south east of the UK
from abandoned woods and fields around Surrey or from Tower blocks
(if you're on FM) from the inner city.
Sunday afternoons has been a popular time to hit the airwaves.
Or you could set up an internet music station over Live 365 or SoundClick
and reach an international audience that way.
Actually it's not that difficult and not that costly to do any of these
means of broadcasting.
SoundClick is free and can be quite good ,, take my advise
and listen to the Beautiful Music service of Radio Seaspray
www.radioseaspray.com
and follow the links.
SoundClick has a lot of different music - some good, some great
and some questionable.
If you're into pop search the Euro section or the
electronica section ..
There are other ways to do Internet Radio .. search the internet
and you will find more answers.
David