The days of spending thousands of dollars on sound processing for radio stations are gone thanks to the advance of some great technology. Radio stations use automation software to run their programming. Some software contains it's own adjustable processing modules but there are many plugins that are very reasonably priced that can sound very close to that $5,000 optimod. You can get many of these plugin for under $100. The processing plugin for Edgewater Gold Radio cost me $39.99.
If you're starting an internet radio station or even a LPFM, don't think so big and expensive. Do some research, you can save thousands and still have a great sounding station! Too many people think that they have to spend a fortune for all of the equipment to enhance a stations sound....not true. Take your time, talk to others who are running successful stations select the software that would best fit your station.\