Using the skip button
AccuRadio offers unlimited skips. You can skip to the next song by pressing the skip button. A song that is skipped is not automatically banned from the channel, and may play again at some point in the future.
Limit reached error message
There is a maximum number of songs which can be played to a single user in a 24 hour period. However, it is set so high that it should be extremely difficult for a listener to reach this limit, even if they listen for a long time and skip many songs. This is a precaution designed to prevent AccuRadio from playing endlessly when no one is listening - for example, if a person left AccuRadio playing on their office computer and went home over the weekend.
If this limit is reached, the account will be locked for 24 hours. After 24 hours, the account can listen again normally.
If AccuRadio is skipping forward when you didn't press the skip button, this article on skipping errors may be helpful.