St Paddy's Day Radio...

[hyson]

...is probably the best channel on Slacker right now.

Look for it under Top Stations, or click http://slacker.com/r/gtKgj

It's hosted by Flogging Molly and has all the Irish music you can stand.

 

[SIRIUSaboutXM]

Another choice: iheart has a Shamrock Radio channel