Ruby Rogues is awesome! It's very high level, but getting yourself exposed to the information even if you don't quite understand it all is a key factor for newbies. Getting exposed to good practices early will help you tremendously.
The giant robots podcast is from the guys with thoughtbot and they do a great job and interview everything from marketers to software engineers. They have a great mix of tech people as a whole.
RubyOnRails Podcast is another great resource, he does everything from high level engineers to low level engineers interviews. I really enjoy that one as a change of pace from the others.
and finally the ruby 5 podcast from the guys at envy labs. They are awesome. They condense down all the new for the last few days into a bi-weekly podcast. Everyone has 10 minutes a week to spare and listen and the website gives you links to everything they touch on. It's great for staying up to date.