请留意itunes的版本问题，win7系统选装 itunes12.6 64位。并且不建议您去网上下载itunes因为每个itunes版本都对对应的系统进行了优化。
官方链接：网页链接
Windows System Requirements
Hardware:
PC with a 1GHz Intel or AMD processor with support for SSE2 and 512MB of RAM
To play Standard Definition video from the iTunes Store, an Intel Pentium D or faster processor, 512MB of RAM, and a DirectX 9.0-compatible video card is required.
To play 720p HD video, an iTunes LP, or iTunes Extras, a 2.0GHz Intel Core 2 Duo or faster processor, 1GB of RAM, and an Intel GMA X3000, ATI Radeon X1300, or NVIDIA GeForce 6150 or better is required.
To play 1080p HD video, a 2.4GHz Intel Core 2 Duo or faster processor, 2GB of RAM, and an Intel GMA X4500HD; ATI Radeon HD 2400; NVIDIA GeForce 8300 GS or better is required.
Screen resolution of 1024x768 or greater; 1280x800 or greater is required to play an iTunes LP or iTunes Extras
16-bit sound card and speakers
Internet connection to use Apple Music, the iTunes Store, and iTunes Extras
iTunes-compatible CD or DVD recorder to create audio CDs, MP3 CDs, or backup CDs or DVDs. Songs from the Apple Music catalog cannot be burned to a CD.
Software:
Windows 7 or later
64-bit editions of Windows require the iTunes 64-bit installer
400MB of available disk space
Some third-party visualizers may no longer be compatible with this version of iTunes. Please contact the developer for an updated visualizer that is compatible with iTunes 12.1 or later
Apple Music, iTunes Store, and iTunes Match availability may vary by country
Apple Music trial requires sign-up and is available for new subscribers only. Plan automatically renews after trialor later
根据官网介绍 建议您安装最新版本的itunes 即itunes12.7.2
参考资料
iTunes - Download iTunes Now - Apple.iTunes - Download iTunes Now - Apple[引用时间2018-1-18]
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