No other AntiVirus-Programm give me an alert for this Programms:

All to Avi - https://alltoavi.sourceforge.net/
and
WinMEnc 0.81 beta - https://winmenc.blogspot.com/

But ClamWin:
...\pmp_muxer.exe: Trojan.Zbot-8239

Please give me a Feedback - I think its a "False Positive"

If ClamWin spots an infection but it is not also spotted by other antivirus programs, it is most likely a false positive--unless it is a new virus and ClamWin is the only antivirus with a signature right now, which is not very likely when you consider the large AV companies with all their resources.

Clam AV furnishes the scanning engine and signature database for ClamWin. You should upload false positives to Clam, starting at https://www.clamav.net/lang/en/sendvirus/ on the web. When you get go the upload page, be sure to indicate it is a false positive and give them the name and why it is a false positive in the Comments section of the form.

You will be helping to make Clam AV and ClamWin a better antivirus.

Regards,

Jotti reports the file is not infected. VirusTotal reports only ClamAV is flagging the file as infected. As per your suggestion, submitted the file to clamav.net as false positive.