s24le and s32le

hen@mellhen-home:~/Musik$ mplayer sr001-01-2496.wav -format s24le
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing sr001-01-2496.wav.
Audio only file format detected.
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 96000 Hz, 2 ch, s24le, 4608.0 kbit/100.00% (ratio: 576000->576000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [pulse] 96000Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A:   2.1 (02.1) of 210.0 (03:30.0)  0.2%

MPlayer interrupted by signal 2 in module: play_audio
A:   2.2 (02.1) of 210.0 (03:30.0)  0.2%
Exiting... (Quit)
hen@mellhen-home:~/Musik$ mplayer sr001-01-2496.wav -format s32le
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing sr001-01-2496.wav.
Audio only file format detected.
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 96000 Hz, 2 ch, s24le, 4608.0 kbit/100.00% (ratio: 576000->576000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [pulse] 96000Hz 2ch s32le (4 bytes per sample)
Video: no video
Starting playback...
A:  31.2 (31.1) of 210.0 (03:30.0)  0.2%

MPlayer interrupted by signal 2 in module: play_audio
A:  31.3 (31.2) of 210.0 (03:30.0)  0.2%
Exiting... (Quit)