RSS Ripper project is a set of Python scripts that rewrites RSS feeds as required for better ease of use. After the rip and rewrite, the new RSS feed is uploaded to your FTP server for your own private re-subscription.
mv digg_ripper.py-dist digg_ripper.py
Edit the FTP values at the top of the script to point to your own FTP.
FTP_HOST = 'example.com'
FTP_USER = 'username'
FTP_PASS = 'password'
FTP_DIR = '~/path/to/public_html'
You may want to add a cron job:
0 * * * * /path/to/rss_ripper/digg_ripper.py >/dev/null 2>&1
And finally you can subscribe to your own custom rss feed.