I am quite certain you can have a multiple choice on your boot system to choose the interface... in the autoexec.bat or something...
I would like to comment that you should be able to choose the definitive one you'll use.
Can I ask if this thread is a joke? I mean, usually people complain they lack choice, not that they have too much.
I myself aim to use the frodoplayer as it seams it will be fast to play. Tried MediaEngine yesterday and didn't like to stare a few seconds a "LOADING" every now and then.