www.newsfirex.com (to purchase and download the newest version.)

NewsFire is a desktop-based RSS reader for Mac OS X. Features include the ability to group and label your feeds and search for news, blogs and podcasts directly in NewsFire and save the results as live feeds.

NewsFire’s integrated audio player allows you to download and listen to podcasts, or export them to iTunes for later listening. 

Can be purchased for $25.

How to choose an RSS Reader?

What is RSS?