Managing files between your Android device and PC isn't an easy task, and often requires additional software to do so efficiently in the absence of USB Mass Storage mode. Downloading a file to Android device can also be done through ADB, but this requires long commands and a physical connection if you haven't already set up wireless ADB.

Luckily, you can transfer files between your PC and Android device via WiFi thanks to XDA Recognized Developer OmarBizreh's app Droid Sync Manager. This Windows-only application works with an Android client, and serves as a convenient command center.

With Droid Sync Manager, you are able to browse your PC's files and folders and download them to your Android device. The application is still at an early alpha stage, so more functionality will be implemented in upcoming releases. The developer already announced that an option to browse and send files and folders to the PC is in works and will be added soon.

To try out this application, you need to install the provided PC host on your Windows machine. You also need a client installed on your phone and you are ready to go. You can grab both files by visiting the original thread, so don't hesitate to go there and give it a shot.