That's why I got a Raspberry Pi and configured it as a media streamer - lot of free sports to watch with the apps people built - including watching live games in other countries. Unfortunately I burned out my one memory chip, and just got the replacement, so not I have to reconfigure it... But I'm not a huge sports fan so I'm not really missing anything. Just did the research for friends who are considering cutting the cord - so I played around to see what I could access with the apps.
If you want to make some REAL money, create a training course someone else could actually follow to duplicate what you did and I will help you market it.
I've thought about it, but have too many irons in the fire at the moment. I've been following a site: My Media Experience (com) which provides a lot of configuration information on the Raspberry Pi, both hardware build and software installs; along with other HTPC builds/configurations. At present, I'd be happier to send people to this guy's site to support his work.
Also, the work of Pi keeps changing as it's open source, so it's hard to keep up with all the new goodies. Best resource would be RaspberryPi.org - that's the official site and it's a wealth of information on different projects people have developed that one can use the R-Pi for (media streamer is just one method...I've found ways on how to turn one into your own web server so you never have to pay for web hosting, among other things). Love the creativity on that site (forums and resources).
For media streamer configurations, I'd recommend XBMC (which I just learned is rebranding itself to Kodi as of version 14). The can be found at xbmc.org and provides a wealth of information regarding how to install the various media center installations on the R-Pi and all the special bells/whistles that can be downloaded/configured.
If I ever get the time to create a simple PDF eBook to streamline this, I'll be sure to let you know Old Buddy! Until then, maybe you'll find the information at the above resources sufficient and not too complex to get your sports back.