Thanks for posting and welcome.
Is your 2700classic getting slower on the music player or in general. Are you using a memory card and do you have a lot of music on a memory card in use with your phone? To optimize the internal memory of your phone use the memory card as much as possible for storage of music.
To check for an update please download and install Nokia Suite. In Nokia Suite you can select the update page (the green icon with the arrow in it) to verify for and install any device updates if available for your device. Nokia Suite also offers an optimizing function. When you have installed Nokia Suite and connected your phone select the 'lifebuoy' icon and find the option to free up memory. Use this and verify if performance improves.
Please can you use the suggestions as mentioned and let us know how you get on with this. If you need further assistance, just ask!
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