For those of you that don’t know, we have been working on a new plugin for After Effect called Twitch. Currently we are at the end of our Beta Testing cycle and will be producing the promo video and information pages. We’d like to have it up for you in a little less than 2 weeks and we will be releasing it soon after. We will also be including tons of tutorials to show you every great new feature.
Audio files import just like other media types but the best format to use is WAV as opposed to MP3, which can be problematic. Audio files can be placed on the timeline just like other media files. There is also an audio switch that can be toggled on or off.
Essentially there are 2 ways to preview audio in AE, first you can play just the audio in a composition by hitting the PERIOD key on the number pad. This will begin playing the audio only, in realtime. The other alternative is using the RAM preview function by hitting the ZERO key. Be sure the audio switch is on in the Time Controls Panel. Also audio levels are displayed in the Audio panel while sound is being played. To render Audio just be sure to check the audio option in the OUTPUT Module from the render queue. Read More about this from Adobe
There are many tips for working with audio as well. To view an Audio Waveform, select an audio track and Press LL on the keyboard; one L will display the amplitude. You can also scrub the Audio by holding down CTRL and dragging the Current Time Indicator across time. More by Adobe