I can create a python script for you that can be run on a regular basis to update the database. I would need more information from you on the database schema you want to use. Any database you have should be fine, including any SQL database. I have a strong reason to believe that Radionomy urls will be supported, since Radionomy bought Nullsoft, and thus Shoutcast from AOL last year.
I can provide this script in 14 days or less, but I would need access to your json file, and a description of how you want the data stored in the database (if you have any preference), and what database you use.
I’ve already started researching this task and I’m confident that I will be able to provide this script to you, and help you set it up, in less than 14 days. Once you see the data, you may want some help cleaning it up (for instance some streams insert a brand tag inside of the meta data like: My Title (brand tag - Joe's Radio). So I'm including some development time in cleaning up the data.
Please let me know if you have any questions. Thank you.