Allow system to sleep even with audio stream running For a bit of background info: I have a 2010 MacBook Pro 15 with OSX 10.10.2 installed.

I'm looking to make the laptop go to sleep even when a proccess that sets PreventUserIdleSystemSleep=1 is open. In this particular case, it as coreaudiod.

I was thinking of something similar to the Windows powercfg -requestsoverride for specific processes/drivers.
You can use a third party tool like Power Manager to make your Mac sleep after a period of inactivity.



Unlike OS X's Energy Saver, Power Manager can put your unused Mac to sleep even when an application or process has requested otherwise. 

Disclaimer: I wrote Power Manager and can answer comments about how it works.