At the moment ArduiTape can only play .wav files and these .wav files have to be below 20kHz due to limitations of the Arduino Nano. We hope to be able to get the conversions done automatically by the Nano board eventually but development is in an early stage as we've been focusing on getting the boards working first.
Arduitape does support sub directories but to move back and forth you need to create a file called ROOT with no extension. This can be done using a text editor like Wordpad. Create a new file, save as ROOT.txt and then rename the file and delete .txt. Put the file in every subdirectory on your SD card.
Another thing worth noting when loading 2400 baud wavs is that sometimes the wav will stop playing and it will look like the game hasn't loaded. Just press play and wait 5-10 seconds and the game will start.
For the MSX we have adapted a version of CASTools to convert .CAS files into .wav files at the right frequency to work with the ArduiTape. This 14400Hz for those who are interested. This works perfectly for most .CAS files at both 1200 and 2400 baud (2400 baud loads the games faster), however CASTools has a known issue with Gremlin Graphics games and a few others. We have found that the games that do not work with CASTools do work with Tapdancer though and Andrew has managed to create a programme that converts Tapdancer files into usable .WAV files at the right frequency.
CASTools for ArduiTape
To use just double click on CASTools and drag a .CAS file into the window. Choose if you want the .WAV to be at 2400 baud or not and then convert.
Tapdancer File Rip.
To use copy all the files from the tapdancer folder of your Android device to the files folder and then run Tapdancer File Rip.exe as Administrator. The .wav file you want to copy to your ArduiTapes SDCard is the 14400.wav file. Just rename it to the name of the game.
As the MSX has many different load commands and Arduitape cannot handle long filenames I recommend creating folders named after the load command the game requires. E.g. All games that use the bload"cas:",r command go in a directory called Bload.
For the Electron find and download UEF2WAV to convert the .UEF files and then use a programme like Gold Wave to Amplify the .WAV and then resample to 16000Hz. Your .WAV file should now be compatible with Arduitape.
At the moment there have only been 2 Arduitapes built and they have only been tested on the MSX and Electron. If you build one for use with another computer let us know so we can work with you to get it working on that system.