This error also happen to... but after in premiere (i dont know why) it just work. I have open the files in Cubase but any sound editor just work fine.
With my sound card, wend i have open after effects and premiere i got problems with sound, don't yet find the issue, if i open sound in AE after in Premiere the sound just don't play. Need to close everything and open again only the premiere. I think one is in 48khz and the other in 41khz and the sound card just go crazy.
For solve the huge length of audio, until been fix, open in any sound editor, cut the extra lenght with no sound save again with same name and you are good to go. I din't do this, i just export the sound under de video in premiere and then just cut the extra.
In the begging wend i try the listen the sound from a clip in premiere the file just didn't have nothing, try open in media player, bsplayer and nothing, it just give's me a error... open in cubase and the sound are there... open again in premiere and everything is good, just needed to cut the extra length. Also see if your sound card accept 48khz audio files (that should) and premiere are working with that number.
Believe me, first time open the sound in premiere and din'd listen nothing... i just went crazy...!!! but in the end everything went ok.