Awesome, thanks

It should now be possible to load Adam .ddp cassette images as well as raw wav files.
The cassette drive in the Adam runs at 20ips but mess will generate 1 7/8ips wav files. I thought that would be best in case anyone wanted to try and record back to tape with a standard tapedeck. The code plays back the data at 20ips so the driver sees the correct frequencies. I added simple support for changing speed, channel and direction of playback to cassette.c as the Adam controls all the tape transport functions.
Oh and as far as I can tell loading of all .ddp files is supported but I'm still working on saving.
It should be relatively simple to add floppy support as well since unlike the other AdamNet peripherals the floppy uses an external eprom and a 6803 as opposed to a 6801 mcu with internal rom.