Development of Creative Commons licenses

[drew Roberts <zotz AT 100jamz.com>]

This is from BY 3.0 4.a.

You may Distribute or Publicly Perform the Work only under the terms of this 
License. You must include a copy of, or the Uniform Resource Identifier (URI) 
for, this License with every copy of the Work You Distribute or Publicly 
Perform

4.b has this:

and provide, reasonable to the medium or means You are utilizing:

4.a seems to be missing this "reasonable to the medium" language.

So, how could one abide by the license and play a CC BY song on a broadcast 
radio station? How do you send out the URI every time you play a song?

all the best,

drew (confused)
-- 
(da idea man)