That's cool!! Anything that makes practice more fun and productive is a huge plus!!

I haven't looped backing tracks in a DAW, but I have created a loop of a chord progression in the looper in my multi effects pedal. I've done this when trying to nail down a solo or to develop soloing ideas. VERY helpful.

I have also used something called Amazing Slow Downer on my phone to loop portions of a song, and perhaps slow it down. VERY handy when trying to learn a solo or a part of a song.

Back in the days of records and cassettes, you had to either get really good at dropping the needle accurately or hitting the "review" button on the tape deck to go back.