I haven't been able to see images for the sides of a Hi-MD players, so I do not know exactly what the outputs there are. According to the specs, there is only a headphone out and USB output. How does the USB output look like? Also, some of the recording equipment I have (soundcards, mixers, etc...) indicate that they accept digital signals from various sources, including Minidisc. I do not see any digital output from the Hi-MD on the specs. Is it that there is no digital output on the portable units, or am I missing something? Thanks in advance.