I, also, did not hear any Morse Code.
Permissions seem to be fine:
$ ls -l lm_morse*
-rw-r--r-- 1 kccricket staff 310 Feb 14 2007 lm_morse_long.snt
-rw-r--r-- 1 kccricket staff 8319 Jan 27 2007 lm_morse_long1.ogg
-rw-r--r-- 1 kccricket staff 311 Feb 14 2007 lm_morse_short.snt
-rw-r--r-- 1 kccricket staff 6555 Jan 27 2007 lm_morse_short1.ogg
And they do appear to be valid OGG Vorbis files:
$ file lm_morse*
lm_morse_long.snt: ASCII text, with CRLF line terminators
lm_morse_long1.ogg: Ogg data, Vorbis audio, mono, 44100 Hz, ~239920 bps, created by: Xiph.Org libVorbis I
lm_morse_short.snt: ASCII text, with CRLF line terminators
lm_morse_short1.ogg: Ogg data, Vorbis audio, mono, 44100 Hz, ~239920 bps, created by: Xiph.Org libVorbis I
If I open lm_morse_long1.ogg in VLC, I hear a beep. If I open lm_morse_short1.ogg in VLC, I hear nothing.
To exclude the possibility of corruption, what are the MD5 checksums of the sound files in the master copy at Frictional Games? Here are mine:
$ md5 lm_morse*
MD5 (lm_morse_long.snt) = dfe8b42a7360ecdaae832f26a2130068
MD5 (lm_morse_long1.ogg) = f8abd874f5ea33fb6cac813f1eb8f81c
MD5 (lm_morse_short.snt) = 7bb930dcdd5f00b0211624686dd642ad
MD5 (lm_morse_short1.ogg) = 7aade3f3b9e262dd03978d72b04bc2b9