I use Tunein also, both on my phone and my PC. I have the mynorthwest link that I use too. I usually download those and play them on VLC
As far as TuneIn goes, I find a lot of other good shows to listen to while working out or driving. ProFootball Weekly with Hub Arkush is pretty good although occassionally he'll say something stupid like "The Percy Harvin trade was Pete doing something splashy like he always does and Rick Spielman was a genius for doing that trade." but those are rare.
The Patriots site has some good draft stuff as well as Draft Tracker, First Draft, BaD - NFL Draft Day 1 is okay and I'm sure there are plenty more.
I'll have to check out the Iheart App
Another cool thing I've found is 1-Click YouTube Video Downloader which is cool because you can choose available formats such as Flash, MPG4 or the open source...can't remember the acronym at the moment but it also shows you the file size.
I installed several different types to try them and 1 - click was my favorite.https://addons.mozilla.org/en-US/firefox/addon/1-click-youtube-video-download/versions/