Hi, this might be a little off topic, but since there is an MP3 player project on this website using Helix, I thought someone might know the answer. In summary, Helix won't play many MP3 files. I have 1 or two out of several I've tested that will play, but the others never seem to find sync or have invalid frame headers. As I'm watching what is occurring thru a debug session, normally what happens is MP3FindSyncWord returns a non-zero offset value a few times, MP3Decode will return ERR_MP3_MAINDATA_UNDERFLOW or ERR_MP3_INVALID_FRAMEHEADER a few times, then it starts decoding and spitting out PCM. However, with some MP3 files, MP3FindSyncWord returns offset values of a few 10's to several hundred, and MP3Decode returns ERR_MP3_INVALID_FRAMEHEADER over and over again. It's like the file format is incorrect, but these files play fine on my computer with Winamp. Any idea what is going on? I've tried taking pieces of MP3's near the middle of the file, but it won't sync on these, either.