demo.js

var i = 0; // MOVED IT HERE
var runs = links.length-1; // MOVED IT HERE

// javascript works from top to bottom

	// Append HTML Player
	$.each(links, function(n) {
		// on play status
		getDuration(n);
	});
	appendAudio(0);
	durationLength();
}

function appendAudio(n) {
	console.log(i,": Horse run. Out ouf ",runs);
	if(i != runs) {
		$("#htmlplayground").append("<audio id=\"audiotrack" + n +"\" src=\""+ links[n] +"\" controls></audio>");
		i++;
		appendAudio(i);
	} else {
		console.log(i,": Horse run complete.")
		// Clean up HTML after function has done it's job
		// $("#htmlplayground").html();
	}

Here is the problem, i and runs now have a local scope. The appendAudio function will not be able to access it.

Uncaught ReferenceError: i is not defined
at appendAudio (playergenerator101.html:155)
at createFile (playergenerator101.html:152)
at HTMLInputElement.onclick (playergenerator101.html:65)

<b>01.</b> Тропа <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/01%20%D0%A2%D1%80%D0%BE%D0%BF%D0%B0.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>02.</b> Вечная падзяка <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/02%20%D0%92%D0%B5%D1%87%D0%BD%D0%B0%D1%8F%20%D0%BF%D0%B0%D0%B4%D0%B7%D1%8F%D0%BA%D0%B0.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>03.</b> Белорусь <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/03%20%D0%91%D0%B5%D0%BB%D0%BE%D1%80%D1%83%D1%81%D1%8C.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;" title="Скачать"></a><br>
<b>04.</b> Новые души <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/04%20%D0%9D%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%B4%D1%83%D1%88%D0%B8.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>05.</b> Преклонитесь пред Ним <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/05%20%D0%9F%D1%80%D0%B5%D0%BA%D0%BB%D0%BE%D0%BD%D0%B8%D1%82%D0%B5%D1%81%D1%8C%20%D0%BF%D1%80%D0%B5%D0%B4%20%D0%9D%D0%B8%D0%BC.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>06.</b> Жизнь как снежинка <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/06%20%D0%96%D0%B8%D0%B7%D0%BD%D1%8C%20%D0%BA%D0%B0%D0%BA%20%D1%81%D0%BD%D0%B5%D0%B6%D0%B8%D0%BD%D0%BA%D0%B0.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>07. </b>Дни проходят <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/07%20%D0%94%D0%BD%D0%B8%20%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B4%D1%8F%D1%82.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>08.</b> На планете людей <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/08%20%D0%9D%D0%B0%20%D0%BF%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B5%20%D0%BB%D1%8E%D0%B4%D0%B5%D0%B9.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>09.</b> Открой двери <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/09%20%D0%9E%D1%82%D0%BA%D1%80%D0%BE%D0%B9%20%D0%B4%D0%B2%D0%B5%D1%80%D0%B8.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>10.</b> Тёплый дождь <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/10%20%D0%A2%D1%91%D0%BF%D0%BB%D1%8B%D0%B9%20%D0%B4%D0%BE%D0%B6%D0%B4%D1%8C.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>11.</b> Буду славить <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/11%20%D0%91%D1%83%D0%B4%D1%83%20%D1%81%D0%BB%D0%B0%D0%B2%D0%B8%D1%82%D1%8C.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>12.</b> Озари мое сердце <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/12%20%D0%9E%D0%B7%D0%B0%D1%80%D0%B8%20%D0%BC%D0%BE%D0%B5%20%D1%81%D0%B5%D1%80%D0%B4%D1%86%D0%B5.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>13.</b> Возьми меня за руку <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/13%20%D0%92%D0%BE%D0%B7%D1%8C%D0%BC%D0%B8%20%D0%BC%D0%B5%D0%BD%D1%8F%20%D0%B7%D0%B0%20%D1%80%D1%83%D0%BA%D1%83.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>14.</b> Друг припомни <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/14%20%D0%94%D1%80%D1%83%D0%B3%20%D0%BF%D1%80%D0%B8%D0%BF%D0%BE%D0%BC%D0%BD%D0%B8.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>15.</b> Стихотворение <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/15%20%D0%A1%D1%82%D0%B8%D1%85%D0%BE%D1%82%D0%B2%D0%BE%D1%80%D0%B5%D0%BD%D0%B8%D0%B5.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>
<b>16.</b> Да Спаткання <a href="http://days4god.org/music/gruppa_vozrozhdenie/vechnaja_padzjaka/16%20%D0%94%D0%B0%20%D0%A1%D0%BF%D0%B0%D1%82%D0%BA%D0%B0%D0%BD%D0%BD%D1%8F.mp3" title="Скачать"><img alt="Скачать" src="http://days4god.org/save.png" style="border: medium none;"></a><br>

That is the html code it parses.