Slicer is missing sound files

[sprunk]

Other content like textures and CEGs seem to have survived since then or at least don't produce obvious errors. Dig them up from whatever old CA version Slicer was found in.

[t=00:01:01.381801][f=0000384] [Sound] Error: [LoadSoundBuffer] unable to open audio file "sounds/junofir2.wav"
[t=00:01:01.381818][f=0000384] [Sound] Error: [Sound::GetSoundId] could not find sound "sounds/junofir2.wav"
[t=00:01:01.381851][f=0000384] [Sound] Error: [LoadSoundBuffer] unable to open audio file "sounds/BladeTurnon.wav"
[t=00:01:01.381858][f=0000384] [Sound] Error: [Sound::GetSoundId] could not find sound "sounds/BladeTurnon.wav"