PLEASE HELP! - imported audio file won't synch to click

Hello. I have Cubase Artist 6.

Either my time warp feature is not working or I’m doing something very wrong.

If I import an audio file (a drum beat) onto an audio track and then attempt to sych the audio track to the click track it doesn’t work.

It’s my understanding that once I go into the editor and click on musical mode, Cubase automatically will synch it to the click track. Is this true? When I do that, nothing seems to happen.

What must I do?

Can some kind soul kindly walk me through this?

No, not necessarily…

You need to define the tempo(-structure) for the file.

How do I do that?