The developer has announced discontinuation of support for Maian Media, which is a shame because when it operates it does a great job. Unfortunately the existing documentation is spotty and the support forum is currently offline, so you are on your own when it comes to making it work. I have slight to moderate programming experience, and am running Joomla 2.5.7 on a Debian shared host with PHP 5.3.13 - and making this extension work was a great introduction to how Joomla actually works. Problems I encountered: PayPal verification failure, because the variables need to be in the same order; database update failure, because variables are not available across different instances of the program; input validation failure, due to conflict with Joomla's database management and built-in data-cleaning. If this sounds like your kind of fun, you will love this store - and the result is worth the effort.
Just to be clear I am no longer providing free support. Between my day job and taking care my one year old I really don't have time to provide support for something that is free to begin with. I am putting the project on GitHub in the hopes that I won't be the only person contributing to this project. I had inherited it to being with. I am still doing development when I find time. If you have found fixes please send them my way and I'll incorporate them into the next version.