You can re-nice the process.
See:
man nice
info nice
The GUI front ends just call the command line tools (and hide the error messages), so I use the tools directly in order to understand the process.
Here are some good links.
How about CD copying, ripping and burning? I can't figure it out.
# CD burning copying ripping info
Is it configured and what is the device? Command this to find out:
cdrecord -scanbus
# Recomended GUI front ends for CD burner
XCDRoast
K3b - CD/DVD Kreator for KDE
Adding an IDE CD-Writer to Linux
Linux DVD HOWTO
CD Writing HOWTO
Burning CDs on Linux
# Burn an ISO to disk
cdrecord driveropts=burnfree -v speed=<burning speed> dev=<your device> /path/to/foo.iso ; eject
# New command for kernel 2-6?
cdrecord driveropts=burnfree -v speed=8 dev=ATAPI:1,1,0 /home/fancy/gnuwinII_August_12_2004.iso ; eject
# Burn from disk to disk
cdrecord driveropts=burnfree -v dev=<your device> speed=<burning speed> -isosize /dev/cdrom ; eject
# ISO information
isoinfo -i -d /dev/cdrom
# Generate an ISO from a directory.
mkisofs -vrTJUV "Label" -o foo.iso /path/to/directory
cd /home/fancy/iso
mkisofs -vrTJUV "Bibles" -o Bibles.iso /pub/downloads/WindowsStuff/Books/Bibles
mkisofs -vrTJUV "Games" -o Games.iso /pub/downloads/WindowsStuff/Games
mkisofs -vrTJUV "Downloads" -o downloads.iso /pub/dlcd
# Generate an ISO from a CD
dd if=/dev/cdrom of=foo.iso
# cdparanoia - search for a drive with reporting of autosense:
cdparanoia -vsQ
# Rip a complete audio CD with cdparanoia
cdparanoia -B "1-";eject
# Convert wav files to oggvorbis
oggenc somefile.wav
Linux MP3 CD Burning mini-HOWTO
# Convert mp3 to wav with lame
for i in *.mp3; do lame --decode $i `basename $i .mp3`.wav; done
# Burn a CD from wav files
cdrecord driveropts=burnfree-v -audio -pad speed=<burning speed> dev=<your device> /path/to/*.wav;eject
cdrecord driveropts=burnfree -v -audio -pad speed=8 dev=0,0,0 /home/fancy/naomisfancy/1st_cd/*.wav;eject
cdrecord driveropts=burnfree-v speed=0 dev=0,0,0 /home/fancy/iso/Bibles.iso;eject
# Copy CD using cdrdao
cdrdao read-cd --device <your device> --read-raw --datafile mydata.bin -v 99 mydata.cue
cdrdao write --device <your device> --overburn -v 99 --speed <burning speed> mydata.cue