My isp has warned me for using limewire,frostwire... now worried about downloading songs. can anyone help me?

A lawyer can help you, and will probably be required. You were warned before because your ISP was informed of the illegal downloading. Next time it'll be a lawsuit. You face a fine between $750.00 and $150,000.00 per song illegally downloaded. A good lawyer can keep the fine on the low end, like $10,000.00 per song. He or she will be well worth however much you have to pay in legal fees.