Avidemux Cannot Use That File As Audio Track

If the audio file is corrupted or damaged, Avidemux won't be able to read it.

This error halts your workflow, but understanding why it appears is the first step to fixing it. avidemux cannot use that file as audio track

If the video expects a certain frequency (like 48kHz) and the audio file is 44.1kHz, the "muxer" might fail to bridge the two. If the audio file is corrupted or damaged,

When you see "Cannot use that file as audio track," Avidemux is essentially saying: “I cannot mux this audio stream into the selected video container without re-encoding, and my current audio output settings do not allow re-encoding, or the audio format is unsupported.” or the audio format is unsupported.”