Note there actually IS a version for Android that plays in the background… See this here: ProTip #28 - An Android version of Syrinscape that runs in the background
But note… there is some questionable performance for this one. I found the sound quickly broke up… Syrinscape does some pretty heavy audio processing. Give it a try anyway?
NOTE the info copied from our FAQ page:
Syrinscape uses the super powerful Unity engine for its 3D surround audio. At the moment that’s what’s stopping it from going into the background. Think of Syrinscape more as a fully fledged sequencer (like Garage Band = stops in the background) than a music player playing a single mp3! Often Syrinscape is playing back 20 or more sample simultaneously, each with dynamic positioning, reverb and even doppler effect. Performance and responsiveness becomes a BIG issue when processes go to low power mode, and there’s issues with keeping Unity running and not destroying the rest of the Tablets system, thus Unity (and hence Syrinscape) pauses atm. I have actually found it is best to have Syrinscape sitting open on the table in front of me so I can change Sounds with just a single touch. Just make sure you keep the screen brightness low-ish so as not to drain your battery.
ALSO: Remember you can sign in as you on up to three devices at once, so you might get one of your players to bring a tablet to devote to Syrinscape for the game, with the bonus that they will get to keep the sounds when they are home too. Just make sure you leave a chunk of time to download necessary content.
Does that all make sense?
That said, should it become possible to keep Syrinscape running in the background at some time in the future, be assured, we will DEFINITELY go for it! It’s something I would like too!