<s>
PortMedia	B-Application
,	O
formerly	O
PortMusic	B-Application
,	O
is	O
a	O
set	O
of	O
open	B-License
source	I-License
computer	B-Library
libraries	I-Library
for	O
dealing	O
with	O
sound	O
and	O
MIDI	O
.	O
</s>
<s>
Currently	O
the	O
project	O
has	O
two	O
main	O
libraries	O
:	O
PortAudio	B-Language
,	O
for	O
digital	O
audio	O
input	O
and	O
output	O
,	O
and	O
PortMidi	B-Library
,	O
a	O
library	O
for	O
MIDI	O
input	O
and	O
output	O
.	O
</s>
<s>
A	O
library	O
for	O
dealing	O
with	O
different	O
audio	O
file	O
formats	O
,	O
PortSoundFile	O
,	O
is	O
being	O
planned	O
,	O
although	O
another	O
library	O
,	O
libsndfile	B-Language
,	O
already	O
exists	O
and	O
is	O
licensed	O
under	O
the	O
copyleft	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
.	O
</s>
<s>
PortMusic	B-Application
has	O
become	O
PortMedia	B-Application
and	O
is	O
hosted	O
on	O
SourceForge	B-Application
.	O
</s>
