Xiph.Org: positron

positron

This is the home of positron, the synchronization manager for the Neuros Audio Computer. This software is primarily intended to support Linux, but will probably be portable to other POSIX systems such as OS X and the BSDs. Currently there are USB protocol issues with OS X, so please don’t try it there yet.

Vorbis support

If you are using one of the beta Neurosetta firmwares, you will need to enable Vorbis support in Positron. To do this you will need to:

  1. Make sure you have the final release of Positron 1.0 installed and configured.
  2. Install pyogg and pyvorbis. These can be found on the Vorbis download page, or they might already be packaged by your distribution. There have been reports that the RPMS on that page do not work on current RPM systems like RedHat 9 and Mandrake 9.1. We suggest you install pyogg and pyvorbis from the source tarballs. Please make sure you have the -devel or -dev packages for libogg and libvorbis installed if your distribution has that sort of thing.
  3. Edit ~/.positron/config and add the option oggvorbis_support=true If the oggvorbis_support option is already present in the file, just edit that line instead.
  4. Clear your database of all pre-existing MP3 entries with positron clear audio. The beta firmware only plays Ogg Vorbis, and trying to play an MP3 will cause it to lock up. Note that you DO NOT need to delete the MP3s from your Neuros.
  5. Manually add Ogg Vorbis files using the positron add command. Keep in mind that positron will also try to upload MP3 files if it finds them, so be precise when you tell it what files and directories to upload.

If you decided to revert your Neuros to the non-Vorbis firmware, you can easily remove all the Ogg Vorbis files from the database and put your MP3 files back into the database by setting oggvorbis_support=false and then running positron rebuild. As before, deleting the actual files on the Neuros is optional.

Documentation

Binary Downloads

RPM-based systems

Debian

positron_1.0-1_all.deb

Or add the following lines to your /etc/apt/sources.list:

deb http://i.cantcode.com/~jack/debian unstable main contrib
deb-src http://i.cantcode.com/~jack/debian unstable main contrib

and then install with:

apt-get update
apt-get install positron

Note: These packages will probably be in Debian unstable soon.

Gentoo

Positron is now available in Portage (masked):
emerge /usr/portage/media-sound/positron/positron-1.0.ebuild

Source Downloads

positron-1.0.tar.gz - Source Tarball

Subversion Access

Read our Subversion access instructions for accessing Xiph.org's anonymous Subversion archives. The positron code is in the positron Subversion module.

Bugs, Contact, Etc

Please report bugs at bugs.xiph.org against the positron product.

Discussion and support on the Neurosetta mailing list

There will also be discussion of positron on the NeurosAudio.com forums.

Old Releases

Version 1.0 Beta 2
positron-1.0b2-1.noarch.rpm - RPM file
positron-1.0b2-1.src.rpm - Source RPM
positron-1.0b2.tar.gz - Source Tarball
Version 1.0 Beta 1
positron-1.0b1-1.noarch.rpm - RPM file
positron-1.0b1-1.src.rpm - Source RPM
positron-1.0b1.tar.gz - Source Tarball