Does any of you know any internet radiostations that is playing good whistle music?
Peter Juul 
Hi Peter
though of course there will be more than only whiste music 
Silvano
Hoi Silvano, wie goht’s? 
Nice station!
Last week my boss and I were surfing for stations to play at the office, and we ran across a BC college station that was playing an Under The Moss tune (my boss’s old band).
Needless to say, that station’s our favourite now.
These guys have a bunch of Irish stations in just about every category you can think of including Pub Music. You can listen to many of them for free but of course their goal is to get you to subscribe. In the search engine (Find Stations That Play) at the top just type in Irish. Enjoy.
This one has a couple stations: http://www.liveireland.com/
This has also quite a bunch of irish music and some whistling also if I recall: http://www.accuradio.com/radiocelt/index.aspx