There is a Louis Armstrong marathon going on at WKCR.org. They are playing his music for 24 hours straight, ending at midnight US Eastern Standard Time tonight. The URL of the radio stream is below.
http://wkcr.streamguys1.com:80/liveUnfortunately, the MP3 bit rate of the stream is 96k, so it's not exactly a critical listening experience. That's not my reason for listening to it though.
I made a .pls playlist file for Logitech Media Server. Contents are below.
[playlist]
NumberOfEntries=1
File1=http://wkcr.streamguys1.com:80/live
Title1=WKCR Jazz
Length1=-1