How do you use an mp3 player with exterra 3.0 treadmill?

To use an MP3 player with an Exterra 3.0 treadmill, locate the audio input jack on the treadmill, typically found on the console. Connect your MP3 player using a standard audio cable (usually a 3.5mm aux cable). Once connected, adjust the treadmill's volume settings and play your desired music on the MP3 player to enjoy your workout. Make sure to secure your MP3 player safely while exercising.