[11] Review request for 8088722: GSTPlatform cannot play MP4 files with multiple audio tracks

[Alexander Matveev]

Hi Kevin,

Please review the following:
https://bugs.openjdk.java.net/browse/JDK-8088722
Instead of failing to load MP4 files with multiple audio tracks we will 
play it with first audio track found by MP4 demux.

Thanks,
Alexander