Mewseek is described as 'MewSeek is a native P2P (peer to peer) client that lets you search and download music for free on your iPhone or iPod Touch with a 3G, EDGE, or WiFi connection. Downloaded music can then be added to your iPod library' and is an app in the File Sharing category. There are three alternatives to Mewseek for iPhone, Online / Web-based, Safari and iPad. The best alternative is music.youxube.com, which is free. Other great apps like Mewseek are dTunes (Free) and Safari Download Manager (Paid).
dTunes is an iTunes equivalent for jailbroken iPhones and iPod Touches. It plays downloaded music and video files and torrents, and provides direct access to music and video sites for downloading files. You can only get dTunes from Cydia (on jailbroken iOS devices).
Safari Download Manager is an extension for jailbroken iPhones that adds a download manager to the web browser. It allows you to download files to your iPhone, which can then be viewed with the app iFile