There is a small problem with the HQ Linux version of DoomRL on some distros that do not support mp3 in SDL (notably Fedora and OpenSUSE). I've written a small script to take care of that problem...
Download DoomRL HQ, put this file in the same directory and run. This script doesn't delete anything, so in case you don't like it you can quite easily reverse what it does.
Requires bash, sed, find and ffmpeg with mp3 decoding and libvorbis encoding. Tested on OpenSUSE.
Note: Kornel told me he plans on switching to vorbis music in the next releases, but for now this is the easiest and fastest thing to do. The transcoding doesn't lower the music quality too much.