Support for WMA Merger is available from the publisher site.
Short description: It can merge/join all kinds of sound files into a wma file. It supports many audio formats such as WMA, MP3, WAV, MPA, MP2, AU, AIF, SND, etc, and video formats MPEG, AVI, VCD, WMV, ASF, DAT, MPE etc....
To speed up your downloads we recommend you use a download manager such as 
Tag archiving utility for MP3s and other digital audio files. Backup and restore data to and from MS Acess 2000 database files, Excel worksheets, or delimited text files.
EZlib is a Free MP3 Music Library/Playlist Manager featuring custom-query on 14 ID3v2 tag fields and file dates; single and mass ID3v2 Tag updating; 4 user-defined custom ID3v2 fields; add/delete pictures; runtime playlist tweaking; automatic lyrics
Convert video files from one format to another, and extract audio tracks.
MKV to AVI Converter includes a powerful video converter which can convert MKV to AVI, convert MKV to DivX or XviD. Convert other video formats MPEG, MPG, ASF, WMV, VCD, SVCD, DAT to avi file also. MKV to AVI is also an MKV splitter and MKV editor.
With Wondershare DVD Slideshow Builder, you can burn your home movie to high-quality DVD for playback on TV, publish all-round video on YouTube, or create photo movie for iPod, iPhone, Zune and more.