The ESP8266 has a single analog input, ... The Adafruit Huzzah for example has no pinouts for it, ... SPI would work if you could find DMA code for it, ...

I already got my ESP8266 ESP-01 with the aditional SPI RAM installes also all the wiring is done, now im only lacking the Software. I want to use the pwm chanel as the sound output.

SPI is an interface, I dunno about the rest, but we do alot of work with SPI and I2C at work. If you got a pinout, you should be able to tell if they have the pins required for those interfaces ...