FireFly Media Server (formerly mt-daapd) › Firefly Media Server Forums › Firefly Media Server › Setup Issues › Problems ripping AAC with iTunes 7.5 & Quicktime 7.3? › Reply To: Problems ripping AAC with iTunes 7.5 & Quicktime 7.3?
That sounds like a regular non-fast start m4a problem, documented here:
If that is the problem, then I found that dBpoweramp (the batch converter for audio files) has a .m4a plug-in which includes a nice .m4a optimiser. That fixes the problem with AAC files encoded with tags / seek tables at the end of the file rather than at the beginning and solves the slow start (or won’t start) problem which it causes.