keep index.php in root of URL

hello,
is it possible to keep the index.php in the URL for the homepage? it just redirects to the root with no index.php. normally this wouldnt be a problem but my client is a musician and after building the website she decided she wanted an audio player that would play across the whole website seamlessly. the only way i knew how to do this was to create a new php page /new/index.php that had an iframe of the original site. So now, i have the index.html page set to redirect to /new/ but wordpress redirects index.php to the root which redirects it to index.html which redirects it to /new/index.php…. as you can see, i have a little bit of an infinite loop.

Thanks!