Hi,
Supplying to the Beep library a WAV File with an unlimited Filesize (FFFFFFFF) at byte offset 0x4 and 0x134 hangs the playback. One needs to kill the whole process. While an unlimited filesize might be not a valid WAV-File (although Mac Finder plays the file fine) and should be therefore rejected it should not hang the library in any case. Drop me a line if you want to fix this and need a sample.
Cheers, Matthias