Help editing SRB2 source code

Hello I was wondering how do I open the source code and what do I need to compile it and where does it go?

Help

Ya i did look at the page but i don't know were to place f-mod

---------- Post added at 03:39 AM ---------- Previous post was at 03:35 AM ----------

and when ever i try to debug it i get this

1>------ Build started: Project: Srb2win, Configuration: Debug Win32 ------
1> 'svnversion' is not recognized as an internal or external command,
1> operable program or batch file.
1> win_sys.c
1>c:\users\optic-gamer\downloads\srb2-master\src\win32\win_sys.c(3098): error C2308: concatenating mismatched strings
1> Concatenating wide "SRB2 " with narrow "v2.1.12"
1>c:\users\optic-gamer\downloads\srb2-master\src\win32\win_sys.c(3127): warning C4244: '=' : conversion from 'long double' to 'double', possible loss of data
1>c:\users\optic-gamer\downloads\srb2-master\src\win32\win_sys.c(3142): warning C4244: '=' : conversion from 'long double' to 'double', possible loss of data
1> win_snd.c
1>c:\users\optic-gamer\downloads\srb2-master\src\win32\win_snd.c(11): fatal error C1083: Cannot open include file: 'fmod.h': No such file or directory
1> mid2strm.c
1>c1 : fatal error C1083: Cannot open source file: 'mid2strm.c': No such file or directory
1> f_wipe.c
1>c:\users\optic-gamer\downloads\srb2-master\src\r_data.h(48): warning C4200: nonstandard extension used : zero-sized array in struct/union
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(148): warning C4244: '=' : conversion from 'fixed_t' to 'unsigned char', possible loss of data
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(213): error C2057: expected constant expression
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(213): error C2466: cannot allocate an array of constant size 0
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(213): error C2133: 'scrxpos' : unknown size
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(214): error C2057: expected constant expression
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(214): error C2466: cannot allocate an array of constant size 0
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(214): error C2133: 'scrypos' : unknown size
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(223): warning C4244: '=' : conversion from 'int' to 'unsigned short', possible loss of data
1>c:\users\optic-gamer\downloads\srb2-master\src\f_wipe.c(228): warning C4244: '=' : conversion from 'int' to 'unsigned short', possible loss of data
1> comptime.c
1> Generating Code...
========== Build: 0 succeeded, 1 failed, 2 up-to-date, 0 skipped ==========