I find that by using a USB to Audio interface not only is the sound better (more bandwidth - lower lows and higher highs) but the reliability is better than by using the headphone or speaker jack.

Most modern laptops are fine for playing mp3/wav files. I just retired one I bought in 2002 and used on stage for 8 years. It still works fine for mp3/wav files, but the hinge for the lid is wearing out.

Here is how I make and run backing tracks on stage:
http://www.nortonmusic.com/backing_tracks.html

Notes ♫


Bob "Notes" Norton smile Norton Music
https://www.nortonmusic.com

100% MIDI Super-Styles recorded by live, pro, studio musicians for a live groove
& Fake Disks for MIDI and/or RealTracks