How to reproduce:
1. Open "FMODBUGPROJECTV2.zip " project from owncloud
2. Go to Tools -> AssetBundles and disable Simulate Asset Bundles
3. Then Build AssetBundles
4. Open Init scene and play
5. Click ‘VIDEO POKER GAMES’ tab on the menu.
6. Click ‘Triple Play Draw Poker’ badge. This will load the included asset bundle. (Hardcoded local directory please keep it in the same place relative to the project folder).
7. When loaded, click ‘Bonus Triple Play’ badge (this scene is loaded from asset bundles and it uses the same AudioManager system, however, you hear the sound and error is not thrown when clicked on ‘Bonus Triple Play’ )
8. When loaded, click the ‘Deal’ button along the bottom of the game screen area. (you may need to click twice)

Result: sound doesn't play and you should get an error Error: Cannot create FMOD::Sound instance for resource archive:/BuildPlayer-SCENENAME/BuildPlayer-SCENENAME.resource, (File not found. )

Reproducible: 5.5.1f1, 5.5.2p2, 5.6.0f1, 2017.1.0a4(in latest trunk sound doesn't play, but I do not get this error)

Project doesn't work on Unity 5.4