I'm assuming you're using MT to fix your mewseek problem. First hit the refresh button at the top left of the file system page (before you touch mewseek to get to your songs). If that doesn't work you can try this way.
1) Open WinSCP
2) Navigate to /var/mobile/Media/Music/MewSeek, and copy the manifest file to your computer
3) Right-click, and select New>Link
4) In the top field, put MewSeek
5) In the bottom field, put /var/mobile/Media/Downloads
6) Make sure "Symbolic link" is checked.
7) Hit okay
8)Navigate to /var/mobile/Media/Downloads
9) Replace the manifest file
10)Open PwnPlayer, and go to File system>MewSeek to play them!
This way may be easier for you than the MT way.