Stereo Mix with the M-Audio Mobilepre USB and Ubuntu 9.10

I was recently gifted a badass "M-Audio Mobilepre" USB Pre-amp by a buddy of mine so i could learn to play the bass in the comfort of my own home. All was fine and well when we used it in Windows to record with Audacity, but when i attempted to use it on Ubuntu Linux, i couldn't hear anything i was plugging into the Pre-amp sound card. I found some threads regarding the older versions of this card and how to use madfuload to load the appropriate firmware to support the cards. Thing is, my version is 200F and should be "plug-n-pray".

After much searching, i figured out that it was due to Pulseaudio yet again.

In this article, i will show you how to remove Pulseaudio, and replace it with ALSA packages. After which, you will be able to get the mono inputs on the M-Audio Mobilepre USB card to come out the stereo output on the back of the card.

1) Kill pulseaudio

# sudo killall pulseaudio

2) Uninstall pulseaudio

# sudo apt-get purge pulseaudio

3) Remove gstreamer pulseaudio support

# sudo apt-get remove gstreamer0.10-pulseaudio

4) Restart

# sudo reboot

5) Install replacement mixers (to control your sound)

# sudo apt-get install xfce4-mixer aumix-gtk

After installation, you may find them in Ubuntu Menu:

Applications -> Sound & Video -> Mixer

Applications -> Sound & Video -> aumix

6) Download Debian package "gnome-control-center" from Ubuntu 9.04 Repositories

32bit:

# wget http://mirrors.kernel.org/ubuntu/pool/main/g/gnome-control-center/gnome-control-center_2.26.0-0ubuntu3_i386.deb

64bit:

# wget http://mirrors.kernel.org/ubuntu/pool/main/g/gnome-control-center/gnome-control-center_2.26.0-0ubuntu3_amd64.deb

7) Extract both deb packages and data.tar.gz

# ar p capplets-data_2.26.0-0ubuntu3_all.deb data.tar.gz | tar zx

# ar p gnome-control-center_2.26.0-0ubuntu3_i386.deb data.tar.gz | tar zx

8) Install "gnome-sound-properties" into Ubuntu 9.10

# sudo cp usr/bin/gnome-sound-properties /usr/bin

# sudo mkdir /usr/share/gnome-control-center/glade/

# sudo cp usr/share/gnome-control-center/glade/sound-properties.glade /usr/share/gnome-control-center/glade/

9) Configure Gnome Sound Settings

# gnome-sound-properties