I know others have certainly tried this already but I haven't seen it mentioned yet so I thought I'd throw it out there for any interested parties. Many of us have previously created an app.disabled folder to store unwanted files that could be retrieved if we ever want them back. I've never tried to disable a sound (mp3) before but I was tired of hearing the Drrooooooid every time I boot up the phone so I ditched it using ADB. Animation still works the same, just no volume. mv /system/customize/resource/VZW_Droid.mp3 /system/app.disabled (Note the spaces after "mv" and "mp3"). Much more enjoybable now. FYI, I tried to cut/paste it elsewhere with Linda File Manager but was denied access due to read only status. Not sure if Root Explorer would bypass that or not and I don't have it to verify.