If you are using a treo 600 or Tungsten T1 or T2, you may run into some inconsistent behaviour when trying to fast forward or rewind songs that are from an online store and 192KBPS or greater. (typically Yahoo Unlimited To Go tracks are 192KBPS as are some Napster tracks)
Pocket Tunes has been optimized as much as possible to allow smooth operation on those devices, but they just meets the minimum requirements for playback of tracks from online stores.
Due to the resources needed for files created at 192KBPS, fast forwarding or rewinding puts too much demand on the device and those functions may not to react properly. We recommend using the slider to move around the current song. You can use the left and right buttons on the five way to skip back or forward but make sure you wait a few seconds after pressing the button to allow the device to 'catch up' to Pocket Tunes.
Please contact NormSoft Support if you have further questions