fix re 'REL_TIME' seeking
fix re 'REL_TIME' seeking

ismaelgaudioso/Coherence,unintended/Cohen,opendreambox/python-coherence,sreichholf/python-coherence,unintended/Cohen,furbrain/Coherence,coherence-project/Coherence,sreichholf/python-coherence,coherence-project/Coherence,furbrain/Coherence,opendreambox/python-coherence,ismaelgaudioso/Coherence