Of course, redirecting to MSVCR80 is fine but MSVCR80/MOZCRT19 are not stand alone substitutes for MSVCRT. The MSVCRT substitutes that work for VLC are MSVCR70, MSVCR80 vs 8.0.40607.38 or earlier and MSVCRT vs 7.0.3790.3959 (2K3's version once redirection of NtClose is done). If using a different version, then placing any of these in VLC's folder will be required and make sure that system KnownDlls in the registry has not got MSVCRT=MSVCRT.DLL or the MSVCRT in the system folder will always load. I have the latest MSVCRT working as well and it too works with VLC. It is not a stand alone substitute though as it needs KernelEx. More discussion about it in kext-diy-kernelex-extensions soon.