Xingtone 5 Create Share Ringtones & More Windows XP / Me / 2000 Professional / 98SE compatible Compatible carriers - ATT, Cingular, Sprint PCS, T-Mobile, Verizon, Cellular One, Bell Canada, Rogers, FIDO Over-the-air transmission is easy and convenient CD audio, MP3, WMA, WAV, OGG VORBIS, AIFF, PCM, ADPCM, VOX, ULAW, ALAW compatible audio formats