What do they mean by "modified software"?

In that particular context, I think the term "Software" refers to the audio media: The music itself. Not software the way we think of it.

I've seen the term "Software" used in that context before. For example, referring to a VHS videotape as the software and the videotape player as the hardware.

If that's the case, then perhaps there is still hope for IASCA and digital audio. There are ways to make sure that the judges are playing the correct digital audio file. They are not trivial methods, though, as we have discussed before, and would require a great deal of effort on the part of the competitors, the judges, and the people designing the playback hardware/firmware.

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Tony Fabris