The subscription tracks from iMesh, Yahoo and other music subscription services are DRM protected .wma files. Unfortunately subscription services do not work with iPods. the Apple iPod player does not support protected Windows Media Audio (WMA DRM) files which is the file format found in iMesh premium tracks.
Here is a quick tutorial to remove iMesh DRM, convert imesh protected wma files to mp3 to play on iTunes iPod iPhone, etc portable players
What we need is a smart DRM Media Converter, it's a powerful DRM Remover and Video Converter that can strip DRM license from protected Music Video and convert Video to the files, the MP3/MP4 players you like, and now the latest version is fully compatible with windows 32/64 bit, windows 7.
And it's very easy to use, the whole process to remove DRM protection from iMesh WMA and convert them to MP3 for iPod just includes 4 simple steps.

Click"Add" to add the protected music files downloaded from iMesh.
For only Audio, just choose convert Audio to" MP3- MPEG Layer - 3 Audio(.*mp3)".
For only Video, choose convert Video to "iPod Video MPEG-4(.mp4)".
You can customize output setting, and the default setting also works great.
Click"Start" to strip iMesh WMA DRM and convert iMesh files to iPod compatible format.
How to import iMesh songs to iTunes, transfer converted iMesh Music to iPod
After the DRM on imesh songs is removed, we can put the songs to play iPod with follow steps:
1. Open iTunes and click "File" to add your music to iTunes library.
2. plug in your iPod to computer, then iTunes will detect your iPod as a device.
3. Select your iPod device on the left panel of iTunes, click "Music" tab, check the Music you want to sync and click "Apply".
Here is the video tutorial on how to remove DRM from iMesh WMA: