just got a replacement phone after my last one had some major...issues. now on this replacement phone any mp3's I try to open it says "No applications can perform this action." I tried downloading a third party app to see if maybe it would pick up my mp3s and then i could just clear defaults and pick a new default player but no luck. any ideas how to solve this issue?
Which version of software are you running? You can find it in Settings->About Phone and it will look like SPH-D710.EL29 (or FF18, FH13)
Codecs are part of the preloaded software, so if they're missing a flash of the ROM or doing the FH13 update if not done already may fix the problem.
You may also want to check your apps to make certain that something isn't trying to take over responsibility for playing MP3s.
FF18, the thing is though even fresh out the replacement box the native software didn't want to support my mp3s though. I didn't do the update or anything I actually wish I could have gotten 2.3 and just been left alone with that but meh, everything else works fine so can't complain too bad.