Step 1. Make sure FrostWire is running on both your Android device and PC, and that all devices are connected to the same WiFi network.
Step 2. On your computer Go to Library, under Devices you should see all the Android devices running FrostWire on the same WiFi network.
Step 3. Drag and drop files over the Android device you want to upload the files to.
Files may come from your file explorer or from the FrostWire library.
Step 4. Check your Android screen and accept the incoming transfer.