You do not need to download anything. Apple split the traditional functions of iTunes into dedicated built-in applications already installed on your Mac:
The specific version number "10.1.3.99" appears to be a typo or a misidentification, as no such official version of iTunes exists in Apple's version history Available Legacy Versions
Because official Apple links for this version are dead (they redirect to modern iTunes), you must use a trusted archive community. Do not use random BitTorrent files. Instead:
Download Itunes 101399 For Mac 39link39 New [work] -
You do not need to download anything. Apple split the traditional functions of iTunes into dedicated built-in applications already installed on your Mac:
The specific version number "10.1.3.99" appears to be a typo or a misidentification, as no such official version of iTunes exists in Apple's version history Available Legacy Versions download itunes 101399 for mac 39link39 new
Because official Apple links for this version are dead (they redirect to modern iTunes), you must use a trusted archive community. Do not use random BitTorrent files. Instead: You do not need to download anything
