The answer depends on how the sound is muted.

If track(s) are muted using F5 settings then use the Reset All Bars button in the F5 window.

If track(s) are muted using the Audio Mixer then click the Master "M" (Mute) button twice. The first click mutes all tracks and the second click unmutes all tracks.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Clipboard01.jpg (76.38 KB, 32 downloads)
F5 Settings Unmute by resetting all bars.
Clipboard02.jpg (39.18 KB, 32 downloads)
Audio Mixer unmute all by using Master "M" button twice.

Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk Sonar - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
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Music at: https://fogle622.wix.com/fogle622-audio-home