It's a permissions issue.
All right, now I'm freaked out. I'm trading with the Melnorme at Alpha Centauri at 0106 PST and speech worked.
SpliceMultiTrack(): loading...
track: comm/melnorm/melno196.ogg, decoder: Ogg Vorbis, rate 11025 format 170102
track: comm/melnorm/melno176.ogg, decoder: Ogg Vorbis, rate 11025 format 170102
SpliceTrack(): loading comm/melnorm/melno203.ogg
SpliceMultiTrack(): loading...
track: comm/melnorm/melno172.ogg, decoder: Ogg Vorbis, rate 11025 format 170102
track: comm/melnorm/melno201.ogg, decoder: Ogg Vorbis, rate 11025 format 170102
track: comm/melnorm/melno181.ogg, decoder: Ogg Vorbis, rate 11025 format 170102
SpliceTrack(): loading comm/melnorm/melno204.ogg
SoundDecoder_Decode(): eof for comm/melnorm/melno074.ogg
Switching to stream comm/melnorm/melno196.ogg at pos 0
Switching to stream comm/melnorm/melno176.ogg at pos 0
Switching to stream comm/melnorm/melno203.ogg at pos 0
SoundDecoder_Decode(): eof for comm/melnorm/melno203.ogg
Switching to stream comm/melnorm/melno172.ogg at pos 0
Switching to stream comm/melnorm/melno201.ogg at pos 0
Switching to stream comm/melnorm/melno181.ogg at pos 0
Switching to stream comm/melnorm/melno204.ogg at pos 0
SoundDecoder_Decode(): eof for comm/melnorm/melno204.ogg
StreamDecoderTaskFunc(): finished playing comm/melnorm/melno204.ogg, source 6

And then it stopped again.
SoundDecoder_Decode(): eof for comm/melnorm/melno203.ogg
Switching to stream comm/melnorm/melno172.ogg at pos 0
Switching to stream comm/melnorm/melno201.ogg at pos 0
Switching to stream comm/melnorm/melno181.ogg at pos 0
Switching to stream comm/melnorm/melno204.ogg at pos 0
SoundDecoder_Decode(): eof for comm/melnorm/melno204.ogg
StreamDecoderTaskFunc(): finished playing comm/melnorm/melno204.ogg, source 6
SpliceTrack(): loading comm/melnorm/melno078.ogg
StreamDecoderTaskFunc(): finished playing comm/melnorm/melno078.ogg, source 6