<s>
Fraunhofer	O
l3enc	B-Application
was	O
the	O
first	O
public	O
software	O
able	O
to	O
encode	O
pulse-code	B-Algorithm
modulation	I-Algorithm
(	O
PCM	B-Algorithm
)	O
.wav	O
files	O
to	O
the	O
MP3	B-Application
format	O
.	O
</s>
<s>
This	O
commandline	B-Application
tool	I-Application
was	O
shareware	B-License
and	O
limited	O
to	O
112kbit/s	O
.	O
</s>
<s>
It	O
was	O
available	O
for	O
MS-DOS	B-Application
,	O
Linux	B-Application
,	O
Solaris	B-Application
,	O
SunOS	B-Operating_System
,	O
NeXTstep	B-Application
and	O
IRIX	B-Operating_System
.	O
</s>
<s>
Since	O
the	O
release	O
in	O
September	O
1995	O
of	O
Fraunhofer	O
WinPlay3	B-Application
,	O
the	O
first	O
real-time	B-General_Concept
MP3	B-Application
software	O
player	O
,	O
people	O
were	O
able	O
to	O
store	O
and	O
play	O
back	O
MP3	B-Application
files	I-Application
on	O
PCs	O
.	O
</s>
<s>
For	O
full	O
playback	O
quality	O
(	O
stereo	O
)	O
one	O
would	O
have	O
needed	O
to	O
meet	O
the	O
minimum	O
requirements	O
of	O
a	O
486DX4/100	B-Device
processor	O
.	O
</s>
<s>
By	O
the	O
end	O
of	O
1997	O
l3enc	B-Application
stopped	O
being	O
developed	O
in	O
favour	O
of	O
its	O
successor	O
MP3enc	O
.	O
</s>
<s>
Development	O
of	O
MP3enc	O
stopped	O
in	O
late	O
1998	O
to	O
favour	O
development	O
of	O
a	O
parallel	O
branch	B-General_Concept
FhG	O
had	O
been	O
developing	O
for	O
some	O
time	O
,	O
called	O
Fastenc	O
.	O
</s>
<s>
An	O
mp3	B-Application
Surround	O
encoder	O
and	O
mp3HD	B-Algorithm
codec	B-General_Concept
and	O
Software	O
Tools	O
are	O
now	O
promoted	O
on	O
the	O
Fraunhofer	O
MP3	B-Application
website	O
.	O
</s>
