Just reposting this question from Reddit trying to help this dude out
I recently downloaded a program called Hear (http://hear.en.softonic.com/mac). It boosts many things like bass and ambiance in the output of your mac and makes everything sound nicer. Well I installed it and now Ableton no longer makes sound. It says that the audio engine is off and to turn it on in the preferences. After messing with every possible setting it still will not work. Every other sound on my computer plays fine and yes I have tried to uninstall hear but nothing works. Please someone help, I love Ableton and would hate to not be able to use it. Thank you in advance
So this is how I responded
since you're on mac check to make sure your audio drivers are up to date. do this by clicking the mac symbol in the upper left hand corner and pick the update option, cant remember what exactly it says (may be different depending on version) but it should be one of the first. after it searches for updates click more detail because it may have updates that you don't want, or not have any driver updates at all. if your driver is up to date try checking your settings in your midi settings. This actually is probably the case as the Hear program, from what you have described, sounds like it has acted as a go between your normal the sound input (any sound the computer would make) and the output (your internal or external speakers). You can find this by going to your applications folder. Applications/Utilities/Audio Midi Setup
from there check to make sure you have your output set to whatever you want the audio to play from. Default is your internal speakers but it sounds like Hear screwed with it. Depending on what version of mac you have it will either be displayed as a selectable option in a drop down or you will just have to doubleclick on the desired output on the left.
If you have tried this and it still doesn't work then open up ableton and go open up the preferences. Go into the audio tab. From here make sure your Driver Type is set to CoreAudio, since I believe this is the only type of Mac built in soundcard. Then make sure Built-In Output is selected as the audio output device, or if you are using a midi-interface, select whatever interface it is you own.
oh wait. after trying all those steps to no avail, click on the Output Config button and select all options available to start off. If you know how this works you can set it to output how you want, but I'd try them all just to check.
Anything I left out that he can try? Or does anyone know anything about this Hear program?