+ WMA support. I understand a lot of people on this forum hate this codec, but I have not found a single technical reason when WMA is unfavorably compared to OGG, MPC, etc. The simple reason that this is a Microsoft technology is not convincing enough.

Q: Why don't you make a better plugin for WMA ?
A: WMA sucks. Don't use WMA. Reasons are too long to list here.

+ better $function documentation, for eg., I already use things like $strstr which I haven't found in any documentation inside the program.

$right - $right(X,Y) - crops X by Y characters from the right side (cuts of remaining characters on left)
$left - $left(X,Y) - crops X by Y characters from the left side (cuts of remaining characters on right)
$rot13 - $rot13(X) where X is a string - swaps or "rotates" first and last 13 characters in alphabet.
$stricmp - like $strstr, but can be used with $if etc. e.g. $if($stricmp(%date%,2001),yes,no) very useful!
$strcmp - like $strstr, but can be used with $if etc. (some diff from $stricmp, not 100% sure though)
$ext - used to get file extension $ext(%_filename_ext%)
$replace - $replace(A,B,C) - Displays A, replacing any Bs that occur in the string with Cs.
$null - use to stop functions returning a value (e.g. use with $put)
$puts - same as $ put, but doesn't return value
$put - variables! $put(X,Y) puts Y in variable X and displays it
$get - $get(X) returns variable X
$max - documented
$min - documented
$filename - not sure
$mod - documented
$div - documented
$mul - documented
$sub - documented
$add - documented
$len - $len(X) - returns length of string X
$substr - $substr(A,Y[,X]) - get substring from character Y to char X from string A where X and Y are numbers. e.g. $substr(%artist%,2,4)
$strstr - $strstr(X,Y) - returns 1 if X and Y are equal; returns 0 if not.
$strrchr - $strrchr(X,Y) - returns last position of Y in X (Y is single char)
$strlchr - $strlchr(X,Y) - returns first position of Y in X (Y is single char)
$strchr - same as $strlchr?
$hex - $hex(X,Y) where X is decimal value to convert to hex, Y is number of characters to zeropad upto
$dec - $dec(X,Y) where X is hexadecimal value to convert to decimal, Y is number of characters to zeropad upto
$num - documented
$ifgreater - self exp.
$iflonger - self exp.
$shortest - self exp.
$longest - documented
$caps2 - documented
$caps - documented
$abbr - documented
$repeat - $repeat(X,Y) repeats X Y times (including original). can be used to manipulate number fields like %__channels%
$padcut_right - documented
$padcut - documented
$cut - documented
$pad_right - same as $pad, but aligns to right side by padding from left.
$pad - documented
$lower - documented
$upper - self exp, converts to upper case
$if2 - $if2(A,B) is the same as $if(A,A,B)
$if - documented

perhaps you already know these, but heres a list of functions:

[...]

what does $strstr do though?

I'm not really a big user of this format myself, but I do run across a lot of sound clips that I get from friends or I run across a sound clip that I want available only in WMA.

I'm sure somebody, someday, will make a plugin for Foobar. All they need is the SDK and some plugin writing skills. If the demand is high enough for a plugin just so NOBODY has to open Windows Media anymore and exclusively use Foobar, I'm pretty sure its going to happen.

I mean, if somebody wrote a RealAudio Plugin for Foobar, I'd use it just so I never have to open Realplayer ever again for those streaming clips I occasionally find out there on the web.

$strstr is used for string comparisons. Returns something greater than 0 if true.
Usage $strstr(%tag%,value-to-compare) Be sure not to put a space before value-to-compare

Thanks! So if i interpretted it right you can use it as an "if X = Y then", which is what I was exactly looking for

Actually, I found this somewhere on this forum, but your function list is even more valuable =)

$stricmp - like $strstr, but can be used with $if etc. e.g. $if($stricmp(%date%,2001),yes,no) very useful!
$strcmp - like $strstr, but can be used with $if etc. (some diff from $stricmp, not 100% sure though)

$filename - not sure

what does $strstr do though?

The first one isn't case sensitive.

Extracts filename (without extension) from full path:
$filename(%_path%)

$strstr(string, substring) - returns position of first occurance of substring in string.