That's one of the differences. Tracks don't play when archived. They also don't take up any CPU resources.
Freezing also saves on CPU resources by converting to audio and turning off fx and synths. But the track still plays.
Archiving is for saving tracks you may need later but you don't want interfering with the project.
Scott
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Scott R. Garrigus -
http://garrigus.com * Author of the Cakewalk Sonar and Sony Sound Forge Power book series:
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http://garrigus.com/?ProAudioTutor * Publisher of the DigiFreq free music technology newsletter:
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