libasound2-plugins 1.0.18-1ubuntu4 (ia64 binary) in ubuntu karmic

 This package contains plugins for the ALSA library that are
 not included in the main libasound2 package.
 .
 The following plugins are included, among other:
 - oss: run native ALSA apps on OSS drivers
 - pulse: play or capture via Pulse Audio
 - lavcrate, samplerate and speexrate: rate converters
 - upmix and vdownmix: convert from/to 2 and 4/6 channel streams
 .
 ALSA is the Advanced Linux Sound Architecture.