Hello, first i would like to say this product is amazing, and before i buy it i would like to know how to delete unwanted videos and music?

On my actual tomtom the items are there but when i open the mobilnova converter on my PC it shows nothing there (media on tomtom)

I don't want these cheesy techno songs on here or the sample vids. that came with the dowload.

Are they stuck there or can i erase them somehow?

They are either stored in Internal Memory or on a SD card. They would either be in the Videos directory or Audio directory. So using a usb, these directories/folders would show up under Windows Explorer when looking at your device.

just delete all from Audio dir on your tomtom