C
I must have missed this question, so here's a version I posted as an answer elsewhere. It's a C quine based version. Compile and run to get next line of song. Repeat until bored. If code says "Time to go..." then enter number of beers next time you run as a command line argument.
// Time to go to the shop and get some beer
//
//
//
//
// #####.#####.#####.#####.#####.#####.#####
// ##.#####.#####.#####.#####.#####.#####.##
// #####.#####.#####.#####.#####.#####.#####
// ##.#####.#####.#####.#####.#####.#####.##
char *z [] = {
"void l(char *s,int b){int i;printf(\"// \");for(i=0;i<b;++i)printf(s);",
"printf(\"\\n\");}\nint main(int argc, char *argv[]){\nint i,j,k,x=%d;",
"char*p;\nif(!x&&argc==2)x=atoi(argv[1]);\nif(!x){printf(\"// Time to ",
"go to the shop and get some beer\\n//\\n//\\n//\\n//\\n\");k=7;\n",
"}else{printf(\"// %%d bottles of beer on the wall, %%d bottles of beer",
".\\n\",x,x);printf(\"// Take one down and pass it round, \");\n",
"if(x>1)printf(\"%%d bottles of beer on the wall.\\n//\\n\",x-1);\n",
"else printf(\"no more bottles of beer on the wall.\\n//\\n\");\n",
"k=x>2?x:2;l(\" ^ \",x);l(\" / \\\\ \",x);l(\"/ \\\\ \",x);",
"l(\"| | \",x);l(\"|Duf| \",x);l(\"| | \",x);l(\"----- \",x);}\n",
"for(i=0;i<4;++i){\nprintf(\"// %%s\", i&1 ? \"##.\" : \"\");\n",
"for(j=i&1;j<k;++j)\nprintf(\"%%s#####\",j!=(i&1)?\".\":\"\");\n",
"printf(\"%%s\\n\",i&1?\".##\":\"\");}\nprintf(\"\\nchar *z [] = {\\n\");\n",
"for(i=0;i<sizeof z/sizeof z[0];++i){\nprintf(\"\\\"\");\n",
"for(p=z[i];*p;++p)\nswitch (*p){\ncase '\\n':printf(\"\\\\n\");break;\n",
"case '\\\\':printf(\"%%c%%c\",92,92);break;\n",
"case '%%':printf(\"%%c\",37);break;\ncase '\"':printf(\"%%c%%c\",92,'\"');break;\n",
"default:printf(\"%%c\", *p);break;}\nprintf(\"\\\",\\n\");}\n",
"printf(\"};\\n\");\nfor(i=0;i<sizeof z/sizeof z[0];++i)\n",
"printf(z[i],x?x-1:0);}\n",
};
void l(char *s,int b){int i;printf("// ");for(i=0;i<b;++i)printf(s);printf("\n");}
int main(int argc, char *argv[]){
int i,j,k,x=0;char*p;
if(!x&&argc==2)x=atoi(argv[1]);
if(!x){printf("// Time to go to the shop and get some beer\n//\n//\n//\n//\n");k=7;
}else{printf("// %d bottles of beer on the wall, %d bottles of beer.\n",x,x);printf("// Take one down and pass it round, ");
if(x>1)printf("%d bottles of beer on the wall.\n//\n",x-1);
else printf("no more bottles of beer on the wall.\n//\n");
k=x>2?x:2;l(" ^ ",x);l(" / \\ ",x);l("/ \\ ",x);l("| | ",x);l("|Duf| ",x);l("| | ",x);l("----- ",x);}
for(i=0;i<4;++i){
printf("// %s", i&1 ? "##." : "");
for(j=i&1;j<k;++j)
printf("%s#####",j!=(i&1)?".":"");
printf("%s\n",i&1?".##":"");}
printf("\nchar *z [] = {\n");
for(i=0;i<sizeof z/sizeof z[0];++i){
printf("\"");
for(p=z[i];*p;++p)
switch (*p){
case '\n':printf("\\n");break;
case '\\':printf("%c%c",92,92);break;
case '%':printf("%c",37);break;
case '"':printf("%c%c",92,'"');break;
default:printf("%c", *p);break;}
printf("\",\n");}
printf("};\n");
for(i=0;i<sizeof z/sizeof z[0];++i)
printf(z[i],x?x-1:0);}
