Forum Linux.général convertir du real audio

Je cherche à convertir certaines conférence de l'UTSL disponibles e,n real audio en mp3. Je sais, il existe une astuce sur le sujet ici : http://linuxfr.org/tips/172.html(...) qui propose deux solutions : vsound ou mplayer.

Cependant vsound c'est long puisque qu'il faut lire entièrement le fichier audio.

Concernant mplayer, quand je tape :

jcsirot@glasnevin:~/downloads$ mplayer -ao pcm -aofile out.wav conf.rm

j'obtiens la sortie suivante :

...
Playing conf.rm.
REAL file format detected.
======= WAVE Format =======
Format Tag: 26995 (0x6973)
Channels: 1
Samplerate: 16000
avg byte/sec: 16000
Block align: 320
bits/sample: 16
cbSize: 10
Unknown extra header dump: [0] [0] [6] [0] [3] [0] [40] [1] [0] [0]
===========================
Not audio/video stream or unsupported!
Clip info:
name: Le supermonde et les dimensions cachées de l'Univers
author: Pierre Fayet
copyright: SFRS©2004
==========================================================================
Trying to force audio codec driver family libmad...
Opening audio decoder: [realaud] RealAudio decoder
opening shared obj '/usr/lib/win32/sipr.so.6.0'
Audio codec: [3] 16 Kbps Voice
Audio bitrate: 16,000 kbit/s (2000 bps)
AUDIO: 16000 Hz, 1 ch, 16 bit (0x10), ratio: 2000->32000 (16,0 kbit)
Selected audio codec: [rasipr] afm:realaud (RealAudio Sipro)
==========================================================================
Checking audio filter chain for 16000Hz/1ch/16bit -> 16000Hz/2ch/16bit...
AF_pre: af format: 2 bps, 1 ch, 16000 hz, little endian signed int
AF_pre: 16000Hz 1ch Signed 16-bit (Little-Endian)
[AO PCM] File: out.wav (WAVE)
PCM: Samplerate: 16000Hz Channels: Stereo Format Signed 16-bit (Little-Endian)
[AO PCM] Info: fastest dumping is achieved with -vc dummy -vo null
PCM: Info: to write WAVE files use -waveheader (default).
AO: [pcm] 16000Hz 2ch Signed 16-bit (Little-Endian) (2 bps)
Building audio filter chain for 16000Hz/1ch/16bit -> 16000Hz/2ch/16bit...
Video: no video
Starting playback...


MPlayer interrupted by signal 11 in module: decode_audio
- MPlayer crashed by bad usage of CPU/FPU/RAM.
Recompile MPlayer with --enable-debug and make a 'gdb' backtrace and
disassembly. Details in DOCS/HTML/en/bugreports_what.html#bugreports_crash.
- MPlayer crashed. This shouldn't happen.
It can be a bug in the MPlayer code _or_ in your drivers _or_ in your
gcc version. If you think it's MPlayer's fault, please read
DOCS/HTML/en/bugreports.html and follow the instructions there. We can't and
won't help unless you provide this information when reporting a possible bug.

Le plus étrange est que la lecture de conf.rm fonctionne parfaitement et que l'extraction du son, d'une video par exemple, fonctionne aussi.

Bref si quelqu'un sait ce qui se passe, a déjà eu le problème ou surtout a une solution qui ne nécessite pas de booter Windows...

Système : Debian testing, noyau 2.6.8-1-686


Merci