Audio video will not play on the timeline

I use Adobe After Effects CS5.5, whenever I have a video in the timeline, it will play the audio of the video. Even if I scroll or a preview, the audio will not play until I made out. How can I fix?

How do you do a preview? If it's with the space bar, you're hurting.

You start an audio overview by pressing. on the number pad and you launch a RAM Preview (including audio) by pressing 0 on the numeric keypad.

Looks like you're new to AE. You will need to take a step back and Start here.

Tags: After Effects

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