Barritio :
Do you have any Internet browser sessions open in task manager? If so, does killing them get rid of the music? Can you tell what it's an advert for? How about killing processes one by one to see which one stops it?
Thank you for your reply. At the beginning there was an ad sound, but I don't remember what it was about because shortly after there was only that music sound, like something for children, but it didn't say anything, there was only that music. I had many tabs open in Chrome and after you replied, I closed every one of them. It appears that that was the solution, because the music stopped. I restarted the computer and opened once again some of the tabs that may have caused the music, and everything was allright, there is no more music in background. It seems that the solution was easier than I thought. Thank you very much
Before I received your reply I downloaded Spybot S&D and these were some cookies I found during my scan and fixed, in case that may have helped although it didn't stop the ad before I did what I wrote above:
Search results from Spybot - Search & Destroy
7/14/2013 2:04:57 PM
Scan took 00:00:15.
34 items found.
Error: Service check: the Services.sbs file is missing. Please use the update to get a new copy!
Zedo: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Statcounter: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Statcounter: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Zedo: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Zedo: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
MediaPlex: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Zedo: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
MediaPlex: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
DoubleClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
DoubleClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
DoubleClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
WebTrends live: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Zedo: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Statcounter: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
FastClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Tradedoubler: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
Tradedoubler: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
CasaleMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
BurstMedia: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
DoubleClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
DoubleClick: Tracking cookie (Google Chrome: Default) (Browser: Cookie, nothing done)
--- Spybot - Search & Destroy version: 2.1.18.131 DLL (build: 20130516) ---
2013-05-16 blindman.exe (2.1.18.151)
2013-05-16 explorer.exe (2.1.18.177)
2013-05-16 SDBootCD.exe (2.1.18.109)
2013-05-16 SDCleaner.exe (2.1.18.110)
2013-05-16 SDDelFile.exe (2.1.18.94)
2013-05-16 SDFiles.exe (2.1.18.135)
2013-03-20 SDFileScanHelper.exe (2.1.16.1)
2013-05-16 SDFSSvc.exe (2.1.18.208)
2013-05-16 SDHookHelper.exe (2.1.18.2)
2013-05-16 SDHookInst32.exe (2.1.18.2)
2013-05-16 SDHookInst64.exe (2.1.18.2)
2013-05-16 SDImmunize.exe (2.1.18.130)
2013-05-16 SDLogReport.exe (2.1.18.107)
2013-05-16 SDOnAccess.exe (2.1.18.4)
2013-05-16 SDPESetup.exe (2.1.18.3)
2013-05-16 SDPEStart.exe (2.1.18.86)
2013-05-16 SDPhoneScan.exe (2.1.18.28)
2013-05-16 SDPRE.exe (2.1.18.22)
2013-05-16 SDPrepPos.exe (2.1.18.10)
2013-05-16 SDQuarantine.exe (2.1.18.103)
2013-05-16 SDRootAlyzer.exe (2.1.18.116)
2013-05-16 SDSBIEdit.exe (2.1.18.39)
2013-05-16 SDScan.exe (2.1.18.177)
2013-05-16 SDScript.exe (2.1.18.53)
2013-05-16 SDSettings.exe (2.1.18.136)
2013-05-16 SDShell.exe (2.1.18.2)
2013-05-16 SDShred.exe (2.1.18.107)
2013-05-16 SDSysRepair.exe (2.1.18.101)
2013-05-16 SDTools.exe (2.1.18.150)
2013-05-16 SDTray.exe (2.1.18.127)
2013-05-16 SDUpdate.exe (2.1.18.91)
2013-05-16 SDUpdSvc.exe (2.1.18.76)
2013-05-16 SDWelcome.exe (2.1.18.129)
2013-05-15 SDWSCSvc.exe (2.1.18.2)
2013-07-14 unins000.exe (51.1052.0.0)
1999-12-02 xcacls.exe
2012-08-23 borlndmm.dll (10.0.2288.42451)
2012-09-05 DelZip190.dll (1.9.0.107)
2012-09-10 libeay32.dll (1.0.0.4)
2012-09-10 libssl32.dll (1.0.0.4)
2013-05-16 SDAdvancedCheckLibrary.dll (2.1.18.98)
2013-05-16 SDAV.dll
2013-05-16 SDECon32.dll (2.1.18.113)
2013-05-16 SDECon64.dll (2.1.18.113)
2013-04-05 SDEvents.dll (2.1.16.2)
2013-05-16 SDFileScanLibrary.dll (2.1.18.12)
2013-05-16 SDHook32.dll (2.1.18.2)
2013-05-16 SDHook64.dll (2.1.18.2)
2013-05-16 SDImmunizeLibrary.dll (2.1.18.2)
2013-05-16 SDLicense.dll (2.1.18.0)
2013-05-16 SDLists.dll (2.1.18.4)
2013-05-16 SDResources.dll (2.1.18.7)
2013-05-16 SDScanLibrary.dll (2.1.18.131)
2013-05-16 SDTasks.dll (2.1.18.15)
2013-05-16 SDWinLogon.dll (2.1.18.0)
2012-08-23 sqlite3.dll
2012-09-10 ssleay32.dll (1.0.0.4)
2013-05-16 Tools.dll (2.1.18.36)
2010-08-13 Includes\Cookies.sbi (*)
Again, thanks