http://www.theregister.co.uk/2007/04/27/internet_radio_equality_act_introduced/
I believe the bill in question is H.R.2060:
http://thomas.loc.gov/cgi-bin/bdquery/D?d110:13:./temp/~bdEcNq::|/bss/d110query.html|
Call/mail/fax your federal rep, and ask for them to support this bill if you enjoy internet radio.
This bill does not demand that web-station can play music for free, but that they pay the same as satellite radio, which is 7.5% of the businesses revenue. This is opposed to the $0.08 per song that is supposed to go into effect the 15th of next month.