issue #201 .2 mp3 playback cherry pick: 6eaea7d6ffb908eea64a48bd827256789d1a1f6e for IE mp3 support 
issue #201 .2 mp3 playback cherry pick:
6eaea7d6ffb908eea64a48bd827256789d1a1f6e for IE mp3 support 
joanpuigsanz/mwEmbed,SVSG/mwEmbed,omridevk/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,DBezemer/mwEmbed,bordar/mwEmbed,bordar/mwEmbed,safarijv/mwEmbed,matsuu/mwEmbed,safarijv/mwEmbed,safarijv/mwEmbed,abaylis/mwEmbed,vladm3/mwEmbed,kaltura/mwEmbed,SVSG/mwEmbed,panda-os/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,slash851/mwEmbed,SVSG/mwEmbed,panda-os/mwEmbed,slash851/mwEmbed,tanyaLibatter/mwEmbed,DBezemer/mwEmbed,bordar/mwEmbed,FlixMaster/mwEmbed,vladm3/mwEmbed,matsuu/mwEmbed,SVSG/mwEmbed,matsuu/mwEmbed,joanpuigsanz/mwEmbed,vladm3/mwEmbed,panda-os/mwEmbed,DBezemer/mwEmbed,FlixMaster/mwEmbed,safarijv/mwEmbed,FlixMaster/mwEmbed,FlixMaster/mwEmbed,alexmilk/mwEmbed,tanyaLibatter/mwEmbed,DBezemer/mwEmbed,bordar/mwEmbed,joanpuigsanz/mwEmbed,tanyaLibatter/mwEmbed,omridevk/mwEmbed,omridevk/mwEmbed,tanyaLibatter/mwEmbed,slash851/mwEmbed,abaylis/mwEmbed,abaylis/mwEmbed,panda-os/mwEmbed,alexmilk/mwEmbed,matsuu/mwEmbed,omridevk/mwEmbed,vladm3/mwEmbed,abaylis/mwEmbed,slash851/mwEmbed,kaltura/mwEmbed,joanpuigsanz/mwEmbed