Specifications

For the GT-6, GT-8 and GT-10, use the SPDIF socket (phono) to connect to the
PC’s SPDIF input (usually phono). Although you can buy “special” SPDIF cables,
a standard audio grade phono cable should be perfectly adequate. This gives
the highest quality stereo signal to the PC since the connection is digital.
For the GT-10, use the USB connection. This also gives the highest quality
stereo signal to the PC since the connection is digital.
If you want to record the audio, then you will need another program (for example a
sequencer).