This sounds more like an unsupported codec in the wav file... could you upload such file somewhere or attach it to the bugreport? :)
-- Wav files won't play out-of-the-box on Dapper PPC https://launchpad.net/bugs/55132 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
