We are getting poor audio quality on Digital Receptionist playback, it's very tinny and crackly. Recording was done on seperate pc, saved as .WAV, PCM Uncompressed, 8000Hz 16 Bit Mono. The file plays perfectly on a number of pc's but when connected via the 3CX its really bad. The 3CX machine is a standalone Vista PC with 4GB of RAM and nothing other than 3CX running, we are using IIS. Any ideas how to improve the playback quality? Gary.