Fix part of #494: Audio autoplay issue fix

[rt4914]

Explanation

The audio should be auto playable on changing the states. This PR fixes the inconsistency issue in that.
Also, checking this was hard because there can be various scenarios to test this, so make sure you test this in various conditions, for example:

1. Play audio and change state in between.
2. Pause Audio and change state in between.
3. Play audio, submit answer and then change state in between.
   or create your own scenarios.

Checklist

• The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• The PR explanation includes the words "Fixes #bugnum: ..." (or "Fixes part of #bugnum" if the PR only partially fixes an issue).
• The PR follows the style guide.
• The PR does not contain any unnecessary auto-generated code from Android Studio.
• The PR is made from a branch that's not called "develop".
• The PR is made from a branch that is up-to-date with "develop".
• The PR's branch is based on "develop" and not on any other branch.
• The PR is assigned to an appropriate reviewer in both the Assignees and the Reviewers sections.

[BenHenning]

Thanks