OSX itself can indeed only read from NTFS formated disks, not write to them.
Only through installing NTFS-3G or the commercial Paragons NTFS for Mac OSX gets write access to NTFS.
While there is a way to convert FAT32 to NTFS there is no way for the other direction apart from reformating the disk.
But for 'uploading' the music files you have on that disk you only need read access not write access.
Or do you plan to leave the files on the disk and not put them into the iTunes library ?
Regards
Stefan
Paragon NTFS for Mac 15 ($20) is a file system driver that allows Mac OS X Yosemite and later (incuding macOS Sierra) to read and write to hard drives, solid-state storage devices, and USB thumb. Quickly restart your Mac in Windows from the menubar if it is installed on your mounted NTFS drive. Excellent solution for end-users, SOHO, and enterprise, supports all NTFS versions from Windows NT 3.1 to Windows 8 (NTFS versions 1.2, 3.0, and 3.1), and mounts the NTFS volumes as native ones. Unprecedented high NTFS performance.
Paragon NTFS for Mac 14 is the industry’s fastest driver giving OS X full read and write access to Windows-formatted NTFS partitions. The new version is fully compatible with Apple’s new operating system OS X 10.11 El Capitan, which was launched yesterday, and still supports all versions back to 10.8 Mountain Lion. Internal tests show Paragon NTFS for Mac 14 is the only solution on the market to match the file transfer speed of Apple’s native driver on SSDs.
Paragon NTFS 14 for Mac achieved 700MB/sec (write) and 800MB/sec (read) on the internal SSD of a MacBook Pro. It also performs as well as HFS+ with external storage: 250MB/sec write and 240MB/sec read on a two-SSD RAID device, and 210MB/sec write and 210MB/sec read on an ordinary external drive (2TB USB 3.0 Seagate Expansion Drive 3.5″).
To ensure a higher level of security, El Capitan delivers a new protection feature. System Integrity Protection prevents modifications to certain system files, folders and processes. This protects components on disk and at run-time, only allowing system binaries to be modified by the system installer and software updates. Code injection and runtime attachments to system binaries are no longer allowed. Paragon NTFS for Mac 14 is fully compatible with Apple’s new security policy ensuring fast, hassle-free and safe access to NTFS partitions from OS X 10.11 El Capitan.
Once the program is installed, the user can get started right away: conveniently navigate contents and read, edit, copy or create files and folders. The program guarantees advanced support of NTFS file systems and provides fast and transparent read/write access to any NTFS partition under OS X 10.11. Paragon has been the leader in cross-platform storage software for 20 years, delivering proven maximum performance, stability and security for cross-platform work between Mac, Windows and other operating systems.
Key functions:
Important updates for all its toolsAll the programs that are part of the pack have been renovated:. Everything is adapted to the OS X environment, but without forgetting about the features that make Office unmistakable.Despite the new design, Office comes along with all its traditional tools. The design and formats have also been updated. 
Word: this tool incorporates new editing, review and shared use functions.
- Full OS X 10.11 El Capitan support.
- Ultra-quick read/write access to NTFS files in OS X El Capitan.
- No limit to file or partition sizes (within NTFS and OS X constraints).
- Supports special NTFS functions in OS X El Capitan such as resource forks, hardlinks, symlinks and file permissions (POSIX file attribute).
- The transfer rate during file operations on NTFS partitions is just as good as it is for operations on native HFS partitions.
- Unparalleled stability – even during peak system utilization!
- Simply install it and go to work. No further system adjustments are necessary once it has been installed.
System requirements
- OS X El Capitan 10.11 and back to 10.8.
Mac Write Ntfs
Availability: Sims 4 for mac os download.
Ntfs For Mac 14 Mac Os Versions
Paragon NTFS for Mac 14 is available for immediate download for $19.99 at http://www.paragon-software.com/home/ntfs-mac/index.html All users who purchased NTFS for Mac 12 will get a free upgrade to version 14. They will receive an invitation to upgrade via email or they can view their real-time upgrade status at http://www.paragon-software.com/landing-pages/2015/ntfs-mac-el-capitan-upgrade/index.html