How to add 2.5 seconds of silence to the beginning and end of an audio recording in Audacity?

Question

Sound processing

Vkontakte does not allow you to download an audio file due to the fact that it is too short.
By the way, what is the minimum length for audio files in contact?

Answer 1

Menu "Create" -> "Create Silence". It is better on separate tracks, so that at first you can arrange it as needed and mix it up.