xLights is working pretty good for me this year compared to Vixen's scheduler.
A few issues, though:
The main one is that for one of my sequences, the lights stop responding about 30 seconds from the end--whatever was on at that moment stays on and whatever was off stays off. The music keeps playing, and once the sequence and song finishes, the next one starts up fine with the lights being responsive again. It does the same thing when I play it as a test without the scheduler. I tried turning off all lights starting a bit before the problematic area, and turn them back on after the problematic area, and the lights remained off. Would it be something in the sequence? I can't imagine the MP3 file would be bad.
Another issue I noticed is that when running the scheduler, my FM sign didn't turn on at the beginning of my show. All my sequences have my FM sign channel on all the time, and I have one sequence at the end of my show to turn it off. I did a workaround my putting a brief moment of "off" before turning it back on for the first song in my show. That worked, but it seems weird I had to do that.
The final issue I had was that the light/music timing was off by about 1/2 second, but I fixed it by modifying my sequence. Looking at other threadsa here, I guess I can fix up the MP3 in Audacity the next time I have the issue.