Last week, I wrote Audio Hijack Pro was one of my most-used apps.
Yes! Outside of the usual email/browser, Audio Hijack Pro is the ONE app I use every single day.— Neil Oosten (@SayHiNeil) December 31, 2017
Now, software maker Rogue Amoeba is about to have a second one in my top five: Airfoil.
What is Airfoil?
Airfoil lets you “share” sound by playing it on a bunch of speakers at once. I use it to play live audio from my desktop computer all the way to the kitchen, at the other end of the apartment.
It stays in sync, too–so as you move from room to room, you’re not missing a second or two of a song or hearing it repeat.
Since I already had Airfoil’s audio receiving part working on a Linux computer in one room, I thought I’d add another receiver using a Raspberry Pi I didn’t know what to do with.
Easy… With One Catch
Rogue Amoeba makes a Linux version of the Airfoil Speakers app available on their website. You just have to download and install it.
But when I ran it with all the dependencies in place, I got this error:
Unhandled Exception: System.Threading.SynchronizationLockException: Object synchronization method was called from an unsynchronized block of code.
Even though the Linux version is officially unsupported, I filed a support request hoping Rogue Amoeba had seen this before. Thankfully, Chris quickly replied the error might be caused by the Mono runtime library version and suggested I use something earlier than version 4 if possible.
Unfortunately, the current Raspbian OS versions install Mono version 4. I tried compiling Mono 3 on a current Raspbian version but didn’t have any luck.
However, my Raspberry Pi is an older model (the Model B+) so I was able to install an old version of Raspbian. I chose the final “wheezy” release.
Loud and Clear
Once I started over on the older operating system, I ran the same commands to install what was needed:
sudo apt-get install mono-runtime sudo apt-get install libmono-system-xml-linq4.0-cil sudo apt-get install libmono-system-windows-forms4.0-cil
Then I downloaded, extracted, and installed the Raspberry Pi version of Airfoil Speakers for Linux:
tar -zxvf AirfoilSpeakersRaspberryPi.tgz cd airfoilspeakers/ sudo make install airfoilspeakers
It works great! And now that it’s running, I’m really looking forward to enjoying music, podcasts, and streaming radio through my whole home.