Hey....This is fix for Camera Video Playback Audio...(audio.primary lib)...also improves the quality of music playback...and will be implemented into further Neat Aosp releases....
Here mate..try flash this zip...itsVoiceRecorder.apk from v5.4..wipe cache and dalvik before installing..see if it helps.. https://www.dropbox.com/s/9xgr1kbq89d41m3/VoiceRecorder_%205.4.zip
Sent from my GT-I9300 using Tapatalk
Some custom images I'm using ...
Fully working on Nexus 5 with Android Lollipop 5.1.0 (LMY47I)
It seems there is a solution here