Generally, a person who wants to include an audio-recording of your performance in the soundtrack of a film or documentary (including a TV program) needs to get your permission to do so. This permission will be in addition to any permission needed in relation to the sound recording itself, and in relation to any copyright material that was recorded.

The consent to use a sound recording in soundtracks, however, is often part of the agreement performers make when they initially consent to being recorded, so check any consent form you signed when being audio-recorded to see whether you are now in a position to control the use of the recording in soundtracks.