MBAM welcome have a look:
Search MUZAPP.exe look at the install timestamp!
after deleting it, it came back 3-4 times now over the last year.
it opens a back door portal through windows firewall...
3DAudio.ax
cis-2.4.dll
issacapi_bs-2.3.dll
issacapi_pe-2.3.dll
issacapi_se-2.3.dll
MACXMLProto.dll
MACXMLProto.dll
MACXMLProto.dll
MAMACExtract.dll
MASetupCleaner.exe
MaXMLProto.dll
MK_Lyric.dll
MSCLib.dll
MSFLib.dll
MSLUR71.dll
MTTELECHIP.dll
MTXSYNCICON.dll
muzaf1.dll
muzapp.dll
muzapp.exe
muzdecode.ax
muzeffect.ax
muzmp4sp.ax
muzmpgsp.ax
muzmpgsp.ax
muzmpgsp.dll
muzwmts.dll
Not sure about this one, but it shares the same install date and time;
it works with Outlook. "but I do not know what the file does or how to remove it"
Redemption.dll