I tried to change the stock boot animation on my OV, but ran into some differences from cases outlines here and on other forums. My VM boot animation seems to be located in /bootimages/ and the sound is in /system/sounds/poweron/. The bootimages are named "sprint_power_on_xx.rle". Rather than messing with these files I added a custom boot animation into the /data/local/ directory. Now I have both boot animations on my phone. I thought (wrongly) that if there was a boot animation in data/local than the stock would not show. Would deleting the files in /bootimages/ and /system/sounds/poweron/ be the way to go? I didn't want to delete files without some expert advice.