Windows Phone 8.1 sound issues

[meddmi]

Hi all,

Currently trying to use createJS on Windows Phone 8.1 (checked with Nokia Lumia 920 and Microsoft Lumia 535), and find next audio issues (maybe not related to CreateJS and happened because of Windows Phone limitation, but need your proffesional opinion):

1. In case if start play first loaded sound, and continue loading of other sounds on background, after load 4th sound, playback sound stopped;
2. When trying to play 4 sound in same time, one of the sound disappear;
3. Fully loaded sound start play with delay;
4. WindowsPhone error #157 and IE. Playing a short audio multiple times and overlapping interrupts #244 issue reproduced with latest version of CreateJS library;

Do you have any idea, useful information or workaround according to this issues?