Sound files for drill?

I've been noticing messages like these show up a lot in the Minecraft log:

Quote

[21:00:59] [Server thread/WARN] [IC2]: Invalid sound file: drill
[21:00:59] [Server thread/WARN] [IC2]: Invalid sound file: drillTwo
[21:00:59] [Server thread/WARN] [IC2]: Invalid sound file: drillThree
[21:01:00] [Client thread/WARN] [IC2]: Invalid sound file: drillTwo
[21:01:00] [Client thread/WARN] [IC2]: Invalid sound file: drillOne

Is there someplace I can download valid sound files for these?

Necropost, but the best workaround I could come up with was to disable IC2 audio in IC2.ini, which at least stopped those messages from spamming the Minecraft log.