<s>
Quod	B-Language
Libet	I-Language
is	O
a	O
cross-platform	B-Operating_System
free	B-License
and	I-License
open-source	I-License
audio	O
player	O
,	O
tag	B-Application
editor	I-Application
and	O
library	O
organizer	O
.	O
</s>
<s>
The	O
main	O
design	O
philosophy	O
is	O
that	O
the	O
user	O
knows	O
how	O
they	O
want	O
to	O
organize	O
their	O
music	O
best	O
;	O
the	O
software	O
is	O
therefore	O
built	O
to	O
be	O
fully	O
customizable	O
and	O
extensible	O
using	O
regular	B-Language
expressions	I-Language
and	O
boolean	O
logic	O
.	O
</s>
<s>
Quod	B-Language
Libet	I-Language
is	O
based	O
on	O
GTK	B-Application
and	O
written	O
in	O
Python	B-Language
,	O
and	O
uses	O
the	O
Mutagen	O
tagging	O
library	O
.	O
</s>
<s>
Ex	B-Error_Name
Falso	I-Error_Name
is	O
the	O
stand-alone	O
tag-editing	O
app	O
(	O
no	O
audio	O
)	O
based	O
on	O
the	O
same	O
code	O
and	O
libraries	O
.	O
</s>
<s>
Quod	B-Language
Libet	I-Language
is	O
very	O
scalable	O
,	O
able	O
to	O
handle	O
libraries	O
with	O
tens	O
of	O
thousands	O
of	O
songs	O
with	O
ease	O
.	O
</s>
<s>
It	O
provides	O
a	O
full	O
feature	O
set	O
including	O
support	O
for	O
Unicode	O
,	O
regular	B-Language
expression	I-Language
searching	O
,	O
key	O
bindings	O
to	O
multimedia	O
keys	O
,	O
fast	O
but	O
powerful	O
tag	O
editing	O
,	O
and	O
a	O
variety	O
of	O
plugins	O
.	O
</s>
<s>
Quod	B-Language
Libet	I-Language
is	O
available	O
on	O
most	O
Linux	B-Application
distributions	O
,	O
macOS	B-Application
and	O
Windows	B-Application
,	O
requiring	O
only	O
PyGObject	B-Language
,	O
Python	B-Language
,	O
and	O
an	O
Open	B-Library
Sound	I-Library
System	I-Library
(	O
OSS	O
)	O
,	O
ALSA	B-Application
or	O
JACK	B-Application
compatible	O
audio	O
device	O
.	O
</s>
<s>
The	O
XFCE	B-Language
desktop	O
ISO	O
image	O
provided	O
by	O
the	O
Debian	O
project	O
installs	O
Quod	B-Language
Libet	I-Language
as	O
the	O
default	O
audio	O
player	O
.	O
</s>
<s>
Queries	O
support	O
boolean	O
logic	O
,	O
numerical	O
/	O
date-based	O
expressions	O
,	O
and	O
regular	B-Language
expressions	I-Language
,	O
and	O
synthetic	O
tags	O
,	O
that	O
are	O
derived	O
internally	O
(	O
e.g.	O
</s>
<s>
Quod	B-Language
Libet	I-Language
is	O
currently	O
bundled	O
with	O
over	O
80	O
Python-based	O
plugins	O
,	O
including	O
:	O
</s>
