It was 100.3 KJKK Jack FM which I’m realizing was only in the DFW area. I figured it was syndicated

Here’s a link to what I’m guessing is their site: https://jack.fm/listen-to-jack-fm/

Here’s a YouTube video which is either a recording or a fan-made version. Either way the quip by Jack after the first song (~3:37) nails the tone for the robo dj’s persona: https://youtu.be/ewDE2rrRbH8