These are Inearthed's (ex-Children of Bodom) demo tracks from 1994. However I didn't include "Ubiquitous Absence of Remission" and "Shining" demos, because they had such a bad recording quality even though they were done later than these.
For mastering I used a free software called Audacity, and I kept the quality @ 320kbps. All I really did was that I removed any unwanted hiss, changed the EQ's and maximized the volume as loud as possible without any recognizable clipping.
If you like these, please seed as long as possible.