Conversation so far:
What were some of CBC Radio 3's webcasts?
CBC Radio 3 's webcasets were Sessions
When did CBC Radio 3's use of Icecast start?
From 2005 the Icecast stream was available from CBC Radio 3's website
When did CBC Radio 3's use of Icecast end?
CBC Radio 3's use of Icecast ended in 2009.
Why did CBC Radio 3's use of Icecast end?
CBC Radio 3's use of Icecast ended due to funding cuts. However, the two services, Icecast and the radio program, were merged in June 2009.

Question: What kind of content did Icecast have?
Self-contained rewrite: What kind of content did CBC Radio 3's show Icecast have?