Soundcard conflict on RPi3

[AdyiPool]

The file mentioned in the radme wasn't found on my RPi3/Raspbian. This worked for me

Create a kernel module blacklist file that prevents all the sound drivers from loading:

1. sudo vi /etc/modprobe.d/blacklist-rgb-matrix.conf
2. add the following lines:

blacklist snd_bcm2835
blacklist snd_pcm
blacklist snd_timer
blacklist snd_pcsp
blacklist snd

1. Save the file and quit vi
2. sudo update-initramfs -u
3. reboot and confirm no snd modules are running by executing the command lsmod

[usefulthink]

Hi @AdyiPool, thanks for this report! That could be a newer raspbian-version handling this differently. Would you mind putting that information into the README and prepare a pull-request?