I know I've come across the concept before, but I don't know if it was an actual product/bit of software. I think the Audacity approach would just sound like st

I know I've come across the concept before, but I don't know if it was an actual product/bit of software. I think the Audacity approach would just sound like static; though without trying it, that's just idle speculation. For Glog formatted logs, you could probably just extract the first letter (E/I/V/etc) and play tones for those. For anything else.. well, I suppose the idea is not "make music" but "expose patterns", so if you can derive the patterns for the log entries, then you could assign tones to each pattern (instead of each token in the line).