SAAS-1011: Files on NFS with incorrect file extensions won't play out
SAAS-1011: Files on NFS with incorrect file extensions won't play out

* Simplified the mime type detection code in pypo and made it actually work

Lapotor/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,LibreTime/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,Lapotor/libretime,LibreTime/libretime,Lapotor/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,Lapotor/libretime,Lapotor/libretime,LibreTime/libretime,LibreTime/libretime,comiconomenclaturist/libretime,LibreTime/libretime,Lapotor/libretime,LibreTime/libretime