They wrote:
Here’s a bonus Christmas Present for the C64 game developers out there. Tape Master Pro V4.0. This is probably one of the best tape mastering tools around. Edit your own loader text and colours, load in and position your loading sprites. Select the border flash scheme, set up your filenames and master your games with a BASIC start with a high speed tape turbo with optional open borders, and with loading picture and music. Max file size of your game to master 193 blocks ($0801-$C7FF). Some examples included:
Rocket ‘N Roll
Starfysh
Blastopia DX
Get it from http://tnd64.unikat.sk/download_utils.html#TMPV4