kennypeter

Agree with Web God, but though i recommend, use http://www.whynopadlock.com/ to check whether you have any insecure item on your website or else you can check source code for insecure item. Apart from all this, i would like to know which Certificate Authority (CA) SSL are you using to protect your website?

Ultimately, there is no such kind of open source which has features as per your requirement but yes you can customize your web platform using open sources such as Joomla, Drupal, WordPress, and Magneto, further for the payment you can use Authorize.net to accept payment via credit card and debit card. Here is the reference details where Open Source is enable with Authorize.net http://www.danielwatrous.com/authorizenet-for-wordpress However, if you want to paid musicians via Paypal or Google Check Out then you can divert them easily on Paypal address to log-in for the payment, once they upload their music on your web platform.

If you are using open source such as Drupal, Joomla, or WordPress, then you can easily configure Authorize.Net payment gateway to accept users payment via credit and debit card rather than diverting users to Paypal or Google check for payment. Here is for your reference an example WordPress Open Source Management with Authorize.net to accept payment via Credit Card or Debit Card. See more at here; http://www.danielwatrous.com/authorizenet-for-wordpress

You can buy the cheapest SSL certificate at just $9.50 for a single year with discount coupon CHEAP@Rapid1yr95 However, if you want multiple year option then you can buy $8/Yr on 4 years purchase with deep discount coupon CHEAP@Rapid4yr8 To avail this discount you need to RapidSSLOnline A Platinum Partner Company of Symantec SSL certificate is the most critical element of online website on the internet. If you have website where you are requesting users for their personal information and as well as sensitive details, then you must have SSL certificate on your website. SSL certificate encrypt the user data and send them in decryption format in order to prevent third party access such as hackers. Additionally, SSL certificate also adds trust and confidence elements for users view point over the website on the internet which gains the changes of potential users into customers. SSL certificates are available on various types such as Domain Validated SSL, Organization Validated, Extended Validation, and WildCard SSL Certificate in SSL industry.

WordPress is now more secure than other two CMS platform as WordPress has plenty plugins to protect each elements of WordPress. I just recently study a WordPress security blog which has an incredible information about WordPress security. I would like to wish that please read it and then choose your the best CMS option with the better security. Read here more about WordPress Security. http://www.searchenginejournal.com/just-say-no-to-hackers-how-to-harden-your-wordpress-security/63685/