# Android (AR-Core) Multiple Audio Tracks Looping

**URL:** <https://forums.unrealengine.com/t/android-ar-core-multiple-audio-tracks-looping/437820>\
**Category:** Audio\
**Tags:** AR, unreal-engine, Android, loop, question\
**Created:** [November 17, 2018, 2:42pm UTC](https://forums.unrealengine.com/t/android-ar-core-multiple-audio-tracks-looping/437820 "2018-11-17T14:42:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Stephan\_Rub](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/stephan_rub/32/1069150_2.png) [@Stephan\_Rub](https://forums.unrealengine.com/u/Stephan_Rub)\
**Post date:** [November 17, 2018, 2:42pm UTC](https://forums.unrealengine.com/t/android-ar-core-multiple-audio-tracks-looping/437820/1 "2018-11-17T14:42:50Z")

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Hi, I’m trying to create a simple AR app where you place members of a rock band in the world and then they start to play. I created 4 looping audio tracks (1 for each instrument). They should start when the actor for the band member hast been placed but they should also take the state of the music loop into account.  
So here is what I mean: Each audio track is approximately 14 seconds long, after it finishes, it loops automatically and creates a seamless loop. All of the tracks played together loop perfectly.  
But when I try to play them separately they don’t sync up with one another.  
I’ve tried multiple methods:

- Starting all of the sound at begin  
play with the volume set to 0 (having  
ticked the “virtualize when silent”  
checkbox on each sound file) and then  
setting the volume to 1, when I want  
them to play.
  - Creating a sound class for each audio track and pushing/popping sound  
mix modifiers
  - Creating a looping timeline with the length of the audio loop, that  
sets a variable where the start time  
of each clip should be relative to  
the loop time.

Nothing seems to work. So maybe it is something platform related?  
Thanks in advance!

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**Author:** ![typeofgraphic](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@typeofgraphic](https://forums.unrealengine.com/u/typeofgraphic)\
**Post date:** [June 10, 2022, 9:13pm UTC](https://forums.unrealengine.com/t/android-ar-core-multiple-audio-tracks-looping/437820/2 "2022-06-10T21:13:06Z")

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i know its been a while, but did you ever solve this?