[ishkey]

your welcome
but i think you are confused, your pages are html.
w3 org validator is a Markup Validation Service
Checking the markup (HTML, XHTML, …) of Web documents.
You change Your DTD but not your coding.
You now have defined a DTD (Document Type Definition) Strict, but are not following the conventions for that type.

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPEhtmlPUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

Maybe you should try: Transitional and leave out the

<?xml version="1.0" encoding="utf-8"?>

Unless you have XML files on your server.

<!DOCTYPEhtmlPUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

Here are the naming conventions for Strict http://www.w3.org/TR/REC-html40/sgml/dtd.html

Transitional http://www.w3.org/TR/REC-html40/sgml/loosedtd.html
It will help in reducing the errors and fixing them will be easier.
You reference outside files some of which are php, but that is not where your problem is.

Yep it's a Great site.

You already have google-analytics good start.

try this- put this in the Google search box to see how Google views you:

info:www.bmcoll.com

then look at a popular site (replace your web name) compare, learn.

take alook here http://www.alexa.com/siteinfo/bmcoll.com while on Alexa type in a popular site to view and you will see the stats it shows. Since you are there, you might as well Edit your your own site info, other sites/search engines pickup information form Alexa.
both are good starting points for SEO

Manually submit your site to the 4-5 major search engines. It will take some time for them to index you, but it will happen. (do not use one of those we will submit to every engine on the planet - you will be considered a spammer) Have your friends ( who have different ips then yours) log into the search engines and search for your website "bmcoll" not with the .com and search for your different key words, when they find you, have them click on your links.

Create a sitmap for your website and list it on your pages, keep it up to date. http://www.xml-sitemaps.com/
Load all 4 maps it generates into your root directory of your web (html, xml, ror, text) Make sure the html one is the one that has the link on your pages. After you have your site map up on the server submit it, with a HTTP request, put this into Google it will ask Google to index your site ( make sure your site map is named sitemap.html)

www.google.com/webmasters/sitemaps/ping?sitemap=http%3A%2F%2Fwww.bmcoll.com%2Fsitemap.html

See if you can get other sites to link to yours.

fix the <title> on the main page - to free "ringtones," not "ring tones"
and in your <metaname='keywords' type ring tones and then ringtones into google and see what happens.



Getting the site right and working SEO is what makes you a Webmaster...

Hope this helps.