You might find help from other users in the forums.
You can set up Google Drive inside your emulator to transfer files to and from iReal Pro (for example saving/importing iReal Pro song files, or your backup files).
Or set up your email inside the emulator so you can share files to and from iReal Pro. (The Windows environment will not be able to directly open iReal Pro to import files, they need to be transferred into your emulator.)
You should be able to use a browser in your emulator to navigate and download songs from the iReal Pro forum.