for baltimore city theres www.incidentbroadcast.net go to and download teamspeak.and they have a video that guides you on how to get it working. its not really the best qualtiy but its free. (this does all public safety)
I tried the "FireFeeds.COm site and signed up. $7.95 a month. The problem is that when you click on a group such as Montgomery County, you get all the channels at once. There is no way to isolate only one channel out of the group. Also, the County website only give you 7A and 7B.
I am also a member of firefeeds and am very disappointed. I joined because I am mainly interested in listening to Montgomery Co, and Prince George's County. I have found that neither of these feeds come in well at all. Many times PG is nothing but static and Montgomery County is choppy and garbled.