No I guess for such applications there is a sound-signal-input and whenever the sound-signal is higher than a threshold-value to animation moves on one step. This solutions makes the light blink in rhytm but it does not keep it in total sync to a certain pattern.
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I haven't done something like that. It is just that I know the basic principle of how a music-production software works. To get a third and separated channel could be realisied somehow with a dolby surround-channel.
If it is OK to have the music mono on one channel you could use the second channel for the beep-signals
This can be done with almost any recording software like for example audacity
audacity offers mark, cut, and paste of parts of a track
So as a start you would import the digitised music into audacity play it back with speaker connected directly to the sound-output of your computer and then have a microphone to record the "switch-animation-signal" on a new track while the music is playing.
A direct connection to your computer is essential. Any bluetooth device uses buffering which means you hear the music 0,2 to 1 seconds later than it is played on the computer.
I'm not a specialist in this field. You should ask in a forum that has this kind of stuff as their central subject. Maybe digitised music in a *.MP3-file or *.WAV file can be combined with Midi-signals and then you would use the midi-signals to create the LED-animation pulses.
best regards Stefan