If you want to, yes... but please make sure you install a version that is made for the h3x0 series. The version that Mmmm offers is for 1x0 series!
There is a link to a build made by Paulheu, but I don't know how recent it is. Don't use a version that's several weeks/months old. Bugs were fixed recently!
I would start using the latest official build and then see if there's any recent REP build. Only the official build is supported by rockbox developers, and it is the one I use to record and test.