Well you may not need one but you should be aware that when you play any music in a public place to employee’s or customers so that includes internet radio players on your PC or a radio in your office or workshop or a radio plugged into your Phone system for callers left on hold or a CD Player or MP3 device plugged into any of the aforementioned devices this is in fact breaking copyright law and depriving Writers and performers of the royalties they are justifiably entitled to expect you to pay. Sounds harsh I know but it is law and you can be fined by the PRS (Performing Rights Society) which represents some 60,000 UK songwriters and composers throughout the UK. Currently the PRS is writing to tens of thousands of small businesses to make them aware of the legal action that can result if you are found to be breaking this law. If you don’t contact them and secure the use of the music you are broadcasting you could face legal action for copyright infringement and may become liable to pay damages and costs.