Used to work - but no more

I have used Remote for several years to control my music for my stage hypnosis shows. Now, using my old laptop, I can control the song that is playing but not change songs. I tried to use it with a newer computer and cannot connect at all. The instructions consistently say to click on the remote button in iTunes to connect my phone to it, but the button does not exist! Very frustrating that I now have to either leave the stage to change songs or hire someone to push a button and run my music. What happened to Macs just work?!?

Jfredm about Remote, v4.3.1