I must be doing something stupid. I've copied the file onto unit, and I did "chmod 700 pcmplay" to give it permission like you said. However when I try to run it, it freezes the empeg. I've used the program cool edit to convert my WAV files to RAW PCM in 16-bit stereo 44100k. Am I incorrectly running the program? While I'm in the folder where I saved pcmplay I type:
./pcmplay /drive0/startupsounds/sound1.pcm
It just locks up after this and I hear no sound.