Expand the timeline

I’m not sure if this is the correct topic to be asking this question but,
I’ve imported a file that was exported as an mp3
After importing it back in, it is compressed in the timeline and I’m not sure how to expand it again for editing.
I need to go an edit it with the timeline expanded. How do I adjust that?

Thank you,

It’s generally best to start a new topic for each new question.

If I understand what you mean correctly, you just need to zoom in horizontally. There’s multiple ways to zoom - I usually use “Ctrl + Mouse wheel” while hovering the mouse pointer over the audio track. See: Zooming Overview - Audacity Manual