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New in Airtime 2.4 is unofficial support for AAC+. Due to legal distribution issues, we cannot make this an out-of-box working experience, however full detailed instructions are provided in this wiki article. Requirements are Ubuntu 11.10 or newer.

Compiling Liquidsoap

Preparation for compiling with AAC+

AAC+ encoder packages are not available in the official Ubuntu repositories - however Medibuntu hosts these files hereSelect the appropriate operating system and then download the 'aacplusenc' package. Once downloaded, open a terminal and install simply via

sudo dpkg -i <downloaded filename>.deb

 

Now that we have the appropriate packages installed, the next step is to install Liquidsoap. Detailed compilation and installation instructions are available here: Building Liquidsoap from Source

 

Enabling AAC+ in the Airtime UI

Now that Liquidsoap has been compiled with AAC+ support, we have one more final step - enable the ability to select these output types in the Web UI.

To enable AAC+ run the following:

sudo -u postgres psql -c "update cc_pref set valstr = valstr||', aacplus' where keystr = 'stream_type'" airtime

 

If you wish to undo the above commands, and start from the beginning, simply run:

sudo -u postgres psql -c "update cc_pref set valstr = 'ogg, mp3, opus, aac' where keystr = 'stream_type'" airtime

 

Your Airtime install should now fully support AAC+ output.  

 

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