ok I try to build a SDK I downloaded from winamps sight and I get this

Creating library Debug/Svis.lib and object Debug/Svis.exp
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/Svis.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

Svis.exe - 2 error(s), 0 warning(s)

what does this mean and how can I fix it if anyone would please help me out thanks.