Audio A1 track plays but not others

[andrewb62924978]

In my timeline. The recorder file on A1 plays but A2-A4 do not. A7-A8 from camera do play. All tracks have sound and if I move the track from A2 to A1 it plays. What is going on?

[Peru Bob]

Try Sequence > Render audio from the menu at the top.

If that doesn't work, delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premi...

If that doesn't work, try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/...

If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
1. Do one of the following:
• Click the Workspace menu icon and select Reset to Saved Layout.
• Choose Window > Workspace > Reset to Saved Layout.
from here:
https://helpx.adobe.com/premiere-pro/using/workspaces.html

If that doesn't work, try Preferences > Audio Hardware and set Input to None.

If that doesn't work, try creating a new project and import the old one into it.

[Warren Heaton]

In your screen shot, the lower tracks have been muted.  Enabling the Mute option tells Premiere Pro to not play the corresponding Audio Track.

[Peru Bob]

@Warren Heaton 

Only A7-A10 are muted in the screenshot.

[andrewb62924978]

Those tracks are supposed to be muted. Tracks A2-A6 are not playing and they should be. A1 is playing. A7-A10 will play if not muted. There is my delima. Why can't I hear A2-A6?

[Warren Heaton]

How far have you gotten through the steps in Peru Bob's post?

If you play the clips in those tracks in the Source panel, do they play as expected?  If you copy and paste clips from one of those tracks to the tail of a higher track, do they play as expected?

If you create a duplicate Sequence and delete just the contents of the Video Tracks, does the audio play as expected?  You may have exceeded what Premiere Pro can mix in real-time with picture on your system with the current formats and settings. 

What do you see in the Audio Track Mixer while the Sequence is playing?