[Openal] AL_SEC_OFFSET is rounded to nearest 0.5s after play/stop/play

[nic at weartronics.com]

Hi OpenAL list,

If I play a source once and get AL_SEC_OFFSET whilst it is playing I get 
good results (granularity of AL_SEC_OFFSET is very small). If I stop the 
source, then play it again, suddenly AL_SEC_OFFSET is always rounded to 
the nearest 0.5 seconds. I get the same result with AL_SAMPLE_OFFSET 
(rounded to nearest 22050 samples) and AL_BYTE_OFFSET (rounded to 
nearest XXX bytes).

Any clues? Thank you!

Nic