It's likely that mp3serch.exe is malware or spyware. You need to remove this process from your PC quickly.

mp3serch has been linked to the malware mp3serch.exe, and should be cleaned immediately. Spyware and viruses often masquerade as non-harmful files, so backing up your PC before deleting files is a very good idea.

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If mp3serch.exe is active on your PC, there is a good chance that there are other types of adware lurking. The best way to avoid problems with spyware and other types of spyware is to scan your PC for free and get rid of all the virus files right now.