I have had success using BB live. It has been reliable. I used it for the first time 9 months ago as live music started coming back and I needed to beef up my soft classical guitar player and sensitive singer-songwriter persona I had always used for background music in nice restaurants. I got a series of bookings at a performance trailer for an energetic 2 hour gig for street festivals. I needed a fast makeover to change my style. There wasn't time to dump everything to wave files and I kept making chart changes (drums and bass higher in mixes, guitars lower because I would cover those parts).
I put the BB files in a directory and use the jukebox. I renamed the songs with a 2 letter code AA, BB, etc. to control the order they played. If I wanted to move a song that was GG to an earlier song I would change it to BC to reorder it earlier.

I set each song to "no count-in" because I couldn't hear the count-in in a noisy environment and it slowed the show down too much. With a solid state drive and Jukebox the next song starts in 5 or 10 seconds so it keeps things moving. I am not much of a stage talker so I could in the time while the song loaded shout out something like "I have 3 Credence Clearwater Revival Songs for you today- here we go". Time to swig some water between other songs.

I have now figured out a screen arrangement that has the lyrics on the left and BB on the right and BB pulls up the lyrics.

At the same time I was revamping my sleepy show to being more energetic I got a referral from a friend for a paid Praise Band (as a duo and trio). I had to chart and perform 4 new songs a week. I mute the computer sound (it has a light on the key) and load the next song and generate and play it (muted) and then use the left arrow to go back a couple of measures and unmute. I have all the songs set for no count-in. When the minister says "The Song of Response is ______" I hit the spacebar and the backing tracks immediately start. I also have the global setting set to end each song instead of cycle back and restart at the top.

Band in a Box has been reliable with no issues in both live outdoor performances and with the Praise Band. I am thinking of doing a youtube video of screen setups and more nuances if people are interested.