Transition between audio tracks at same timestamp

Hey all,

I’ve thought of a few ways to accomplish this, but they all seem fairly roundabout and ugly compared to working in other engines. What I am trying to accomplish is:

Track A and Track B are the same song, but in different styles. Let’s say Track A is playing, and is at the 1’33" mark. On some event, I want to change to playing Track B, and start Track B at 1’33".

What is the best way to get the 1’33" timestamp?