This is a Straight audio rip from the game files which includes a few tracks from Battle Out Of Hell. -- All tracks have been converted to OGG format for use in Doom Wads and other games that use OGG format.
Again, just copy these tracks to your wad, rename them there to whatever you need and voila! Badass heavy chaotic energy now flows freely through your maps, unhindered brutality at its finest.
Send the fiends of hell back to their infernal damnation with the melodic savagery of the Painkiller: Overdose OST.