I haven't tried the latest version but last time I tried there was problems with FLAC format playback lagging when device is locked,probably cause of low power for decoding.
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CURRENT DEVICE: LG OPTIMUS 4X HD
ROM: BEANSTALK [4.4.2]
KERNEL : iodak v9
SUPERCHARGED HTC EVO 3D
HBOOT: S-OFF Revolutionary 1.49.1107
ROM: CM10.1 UNOFFICIAL
KERNEL:Anryl/Johnnys CM kernel