I held onto Real for a while (have long since dumped it, of course) only because for some reason Media Player started for having problems with midi files while they still played fine in Real. These days I use WinAmp for virtually all media.
I never bothered with the Real alternative, since I haven't run into Real-specific formats in ages. My son thinks, and it's a reasonable guess, that those are rapidly becoming obsolete as Real scares more and more people away.